Prosecution Insights
Last updated: April 19, 2026
Application No. 18/585,750

ENABLING PHYSICAL RANDOM-ACCESS CHANNEL REPETITION COMBINING IN A RADIO UNIT FOR AN O-RAN-BASED RADIO ACCESS NETWORK

Non-Final OA §102
Filed
Feb 23, 2024
Examiner
HAILU, KIBROM T
Art Unit
2461
Tech Center
2400 — Computer Networks
Assignee
Mavenir Systems Inc.
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
2y 11m
To Grant
86%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
677 granted / 847 resolved
+21.9% vs TC avg
Moderate +6% lift
Without
With
+6.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
40 currently pending
Career history
887
Total Applications
across all art units

Statute-Specific Performance

§101
4.7%
-35.3% vs TC avg
§103
49.9%
+9.9% vs TC avg
§102
23.0%
-17.0% vs TC avg
§112
12.9%
-27.1% vs TC avg
Black line = Tech Center average estimate • Based on career data from 847 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 Objections Claims 9 and 17 are objected to because of the following informalities: the claims recite a claim language, “adapted to perform” in line 2, respectively. However, the claim language suggests or makes optional but does not require steps or actions to be performed. Appropriate correction is required. 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 1-24 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Sung et al. (US 2023/0336295 A1). Regarding claim 1, Sung discloses a method of operating an Open Radio Access Network (O-RAN) (abstract), comprising the steps of: communicating from an O-RAN radio unit (O-RU) (406 and/or 408) to an O-RU controller (404 and/or 402), data informing that the O-RU supports physical random-access channel (PRACH) combining (paragraph [0232]-[0233]; [0239]; [0012]-[0015]; [0021]-[0025]; [0027]-[0029]; [0038]-[0051]; [0053]-[0055]; [0064]-[0067]; [0069]-[0072]; [0074]-[0077]; [0079]-[0081]; and so on, illustrate transmitting support or capability of O-RU to combine repetition of PRACH or symbols); communicating from the O-RU controller to the O-RU, a parameter to facilitate the PRACH combining (paragraph [0233]-[0235]; [0241]; [0016]; [0020]; [0026]; [0030]; [0052]; [0056]; [0068]; [0073]; [0078]; [0082]; [0098]; and etc., explaining a reception by the O-RU a permission information to combine the PRACH or symbols); and configuring the O-RU in accordance with the parameter (paragraph [0239]-[0243]; [0022]; [0032]; [0048]; [0061]; [0087]; [0254]; [0267]; [0277]; [0280]; [0293]; and so on, describe the configuration or performing the action of combining based on the combining information). Regarding claims 9 and 17, the claims include features identical to the subject matte mentioned in the rejection to claim 1 above. The claims are mere reformulation of claim 1 in order to claim the corresponding Open Radio Access Network Radio Unit (O-RU) and Open Radio Access Network Radio Unit controller (O-RU controller), respectively, and the rejection to claim 1 is applied hereto. Regarding claim 2 and 18, Sung further discloses comprising the step of: sending from the O-RU to an O-RAN distributed unit, a combined signal in accordance with the PRACH combining (paragraph [0235]-[0236]; [0238]-[0239]; and etc.). Regarding claim 3 and 19, Sung further discloses comprising the step of, prior to the step of communicating from the O-RU controller to the O-RU, the method further comprises the step of: communicating from the O-RU to the O-RU controller, data indicating a maximum number of PRACH repetitions that can be combined at the O-RU (paragraph [0235]; [0238]; [0015]-[0020]; [0025]-[0030]; [0041]-[0046]; [0051]-[0056]; and etc.). Regarding claim 4 and 20, Sung further discloses comprising the step of, prior to the communicating from the O-RU controller to the O-RU: communicating from the O-RU to the O-RU controller, data indicating a maximum supported gain value for the PRACH combining (paragraph [0235]; [0015]-[0020]; [0025]-[0030]; [0041]-[0046]; [0051]-[0056]; and etc.). Regarding claim 5 and 21, Sung discloses wherein the PRACH combining comprises time-domain combining (paragraph [0173]-[0174]). Regarding claim 6 and 22, Sung discloses wherein the PRACH combining comprises frequency-domain combining (paragraph [0173]-[0174]). Regarding claim 7 and 23, Sung discloses wherein the step of communicating from the O-RU controller to the O-RU further comprises, communicating the parameter from the O-RU controller to the O-RU via a management plane interface (paragraph [0021]; [0031]; [0047]; [0057]; [0070]; [0083]; [0266]; [0276]; [0292]; and so on). Regarding claim 8 and 24, Sung discloses wherein the step of communicating from the O-RU controller to the O-RU further comprises including the parameter in a section extension appended to a control plane message sent by an O-RAN distributed unit to the O-RU via a fronthaul interface (paragraph [0243]; [0247]; and etc.). Regarding claim 10, Sung discloses wherein the operations further include: sending to an O-RAN distributed unit, a combined signal in accordance with the PRACH combining (paragraph [0235]-[0236]; [0238]-[0239]; and etc.). Regarding claim 11, Sung discloses wherein the operations further include: prior to receiving the parameter, sending to the O-RU controller, data indicating a maximum number of PRACH repetitions that can be combined at the O-RU (paragraph [0235]; [0238]; [0015]-[0020]; [0025]-[0030]; [0041]-[0046]; [0051]-[0056]; and etc.). Regarding claim 12, Sung discloses wherein the operations further include: prior to receiving the parameter, sending to the O-RU controller data indicating a maximum supported gain value for the PRACH combining (paragraph [0235]; [0015]-[0020]; [0025]-[0030]; [0041]-[0046]; [0051]-[0056]; and etc.). Regarding claim 13, Sung discloses wherein the PRACH combining comprises time-domain combining (paragraph [0173]-[0174]). Regarding claim 14, Sung discloses wherein the PRACH combining comprises frequency-domain combining (paragraph [0173]-[0174]). Regarding claim 15, Sung discloses wherein the operation of receiving the parameter comprises receiving the parameter from the O-RU controller via a management plane interface (paragraph [0021]; [0031]; [0047]; [0057]; [0070]; [0083]; [0266]; [0276]; [0292]; and so on). Regarding claim 16, Sung discloses wherein the operation of receiving the parameter comprises receiving the parameter in a section extension appended to a control plane message sent by an O-RAN distributed unit to the O-RU controller via a fronthaul interface (paragraph [0243]; [0247]; and etc.). 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

Feb 23, 2024
Application Filed
Feb 03, 2026
Non-Final Rejection — §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
86%
With Interview (+6.3%)
2y 11m
Median Time to Grant
Low
PTA Risk
Based on 847 resolved cases by this examiner. Grant probability derived from career allow rate.

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