Prosecution Insights
Last updated: August 17, 2026
Application No. 18/907,212

TECHNIQUES FOR A SOUNDING REFERENCE SIGNAL SECTION EXTENSION FOR CHANNEL ESTIMATION BY A RADIO UNIT

Non-Final OA §102
Filed
Oct 04, 2024
Examiner
HAILU, KIBROM T
Art Unit
2461
Tech Center
2400 — Computer Networks
Assignee
Qualcomm Incorporated
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
12m
Est. Remaining
87%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allowance Rate
699 granted / 872 resolved
+22.2% vs TC avg
Moderate +7% lift
Without
With
+6.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
27 currently pending
Career history
900
Total Applications
across all art units

Statute-Specific Performance

§101
5.3%
-34.7% vs TC avg
§103
52.3%
+12.3% vs TC avg
§102
19.7%
-20.3% vs TC avg
§112
14.6%
-25.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 872 resolved cases

Office Action

§102
DETAILED 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 . Claim Rejections - 35 USC § 102 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. The following is a quotation of the appropriate paragraphs of 35 U.S.C. 102 that form the basis for the rejections under this section made in this Office action: A person shall be entitled to a patent unless – (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claims 1, 11-15, and 19 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Han et al. (US 2025/0168042 A1). Regarding claim 1, Han discloses an apparatus for wireless communication at a radio unit (RU) (e.g. 2A-2B, 5-7, and so on), comprising: one or more memories (625); and one or more processors (621), coupled to the one or more memories, configured to cause the RU to: receive, as at least part of a first fronthaul control plane (C-plane) message, a sounding reference signal (SRS) section extension that indicates transmission configuration information associated with two or more SRS ports and one or more transmissions that share one or more air interface resources that span multiple symbols and one or more frequency partitions (paragraph [0007]-[0012]; [0114]-[0116]; [0119]-[0123]; [0129]-[0136]; [0138]-[0152]; [0154]-[0159]; [0169]-[0171]; [0175]-[0177]; [0179]-[0192]; [0203]-[0210]; [0212]-[0216]; and so on, illustrating receiving, as part of C-plane, SRS section extension indicating configuration information related to antenna ports and resources in symbols and frequencies); and transmit, as at least part of a second fronthaul C-plane message, one or more channel estimation measurement metrics that are based at least in part on the transmission configuration information (paragraph [0009]-[0012]; [0129]-[0130]; [0134]; [0138]-[0159]; [0207]; and etc., explaining transmitting channel estimation measurements based on the received configuration information). Regarding claim 15 and 19, the claims include features identical to the subject matter mentioned in the rejection to claim 1. The claims are mere reformulation of claim 1 in order to define the corresponding method and a non-transitory computer-readable medium, and the rejection to claim 1 is applied hereto. Regarding claim 11, Han discloses wherein the second fronthaul C-Plane message indicates at least one of: a channel response matrix (H matrix) calculated by the RU, a channel singular value decomposition information associated with the H matrix, a signal-to-interference-plus-noise ratio metric, an eigen vector associated with the H matrix, or a codebook value that is associated with channel state information (paragraph [0207]). Regarding claim 12, Han discloses wherein the first fronthaul C-plane message includes multiple instances of the SRS section extension, each SRS extension being associated with a respective time partition (figs. 8-10; paragraph [0179]-[0185]; [0188]-[0192]; [0203]-[0210]; [0216]; [0220]; and so on). Regarding claim 13, Han discloses wherein the one or more processors are further configured to cause the RU to: compute the one or more channel estimation measurement metrics based at least in part on the transmission configuration information (paragraph [0009]-[0012]; [0129]-[0130]; [0134]; [0138]-[0159]; [0207]; and etc.). Regarding claim 14, Han discloses wherein the first fronthaul C-plane message indicates at least one of: a type of channel estimation measurement to include in the second fronthaul C-plane message, a list of SRS ports, from the two or more SRS ports, that indicate to include, for each SRS port in the list of SRS ports, a respective channel estimation measurement metric in the one or more channel estimation measurement metrics in the second fronthaul C-plane message, or a frequency reporting granularity (paragraph [0204]-[0206]; and so on). Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to KIBROM T HAILU whose telephone number is (571)270-1209. The examiner can normally be reached M-F 8:00 AM to 5:30 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, HUY D VU can be reached at (571)272-3155. 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. /KIBROM T HAILU/Primary Examiner, Art Unit 2461
Read full office action

Prosecution Timeline

Oct 04, 2024
Application Filed
Jul 17, 2026
Non-Final Rejection mailed — §102 (current)

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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
80%
Grant Probability
87%
With Interview (+6.9%)
2y 10m (~12m remaining)
Median Time to Grant
Low
PTA Risk
Based on 872 resolved cases by this examiner. Grant probability derived from career allowance rate.

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