Prosecution Insights
Last updated: April 19, 2026
Application No. 18/681,770

METHOD FOR CALCULATING SPATIAL NON-STATIONARY WIRELESS CHANNEL CAPACITY FOR LARGE-SCALE ANTENNA ARRAY COMMUNICATIONS

Non-Final OA §102
Filed
Feb 06, 2024
Examiner
DOAN, PHUOC HUU
Art Unit
2646
Tech Center
2600 — Communications
Assignee
Southeast University
OA Round
1 (Non-Final)
92%
Grant Probability
Favorable
1-2
OA Rounds
2y 6m
To Grant
99%
With Interview

Examiner Intelligence

Grants 92% — above average
92%
Career Allow Rate
1022 granted / 1115 resolved
+29.7% vs TC avg
Moderate +9% lift
Without
With
+8.7%
Interview Lift
resolved cases with interview
Typical timeline
2y 6m
Avg Prosecution
22 currently pending
Career history
1137
Total Applications
across all art units

Statute-Specific Performance

§101
8.4%
-31.6% vs TC avg
§103
27.9%
-12.1% vs TC avg
§102
32.0%
-8.0% vs TC avg
§112
9.8%
-30.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1115 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 – Claim(s) 1 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by LEATHER et al. (US Pub No. 2023/0387996). Claim 1, LEATHER discloses a method for calculating a spatial non-stationary wireless channel capacity for large-scale antenna array communication (See Fig. 1; and par [0056] “disclosed of a structure antenna arrays functional model”), comprising: Step 1, constructing a non-stationary channel model for a large-scale antenna array having a mutual coupling effect (par [0097] “applied mutual coupling decreases the spatial correlation level and undermines the estimation accuracy of the MIMO channel”); Step 2, building a channel measurement system for the large-scale antenna array, to obtain measurement data (par [0084] “perform of a channel measurement by the antenna arrays element to obtain measurement data by of data channels”); Step 3, optimizing simulation parameters for a channel of the large-scale antenna array, and simulating a spatial cross-correlation function (par [0085] “disclosed the method 600 performed of simulate to determine the correlation function, for example corresponding to the antennas examined at this time, and may further comprise determining the antenna correlation at least between a first antenna and a second antenna of the wireless interface arrangement in par [0086])”); Step 4, proposing and calculating a spatial stationary interval according to the spatial cross- correlation function (par [0109] “proposing and calculating a spatial stationary interval according to the spatial cross- correlation function by par [0441] BER can be measured statistically by either changing the SNR for every channel realization, and providing a sufficiently high enough number of channel realizations with the channel emulator which can be calculated by statistical means based of the provided of the synthesized propagation channel ); Step 5, calculating a channel capacity within the interval and the total channel capacity according to the stationary interval par [0497] “perform of time intervals, for example when compared to known concepts as the orientation of the three devices relative to each other and available multipath components) ; and Step 6, comparing simulation results with measurement results, to verify correctness of a capacity calculation of the non-stationary channel (See Fig. 16, and par [0034] “comparing simulation results with measurement results by for example shows a comparison of a performance of various schemes, therein a SISO (1×1), SIMO (1×8, 1×19), MISO (8×1, 19×1) and MIMO (3×3, 1×10)”). Allowable Subject Matter Claims 2-6 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. Claim 2. The method for calculating the spatial non-stationary wireless channel capacity for the large-scale antenna array communications according to claim 1, wherein steps of Step 1 are specifically as follows: Step 101, constructing a channel matrix H = [PL - SH - BL - OL]L-HS for a non-stationary massive MIMO channel model, where PL denotes a path loss, SH denotes a shadowing that follows a lognormal distribution, BL denotes a blockage loss, and OL denotes an oxygen loss; HS = [hqp(t, )] PNG media_image1.png 8 19 media_image1.png Greyscale denotes a small-scale fading matrix, MR and MT denote the number of antennas at the receiving and transmitting terminal, respectively; Step 102, modeling a spherical wavefront; wherein a distance PNG media_image2.png 15 29 media_image2.png Greyscale (t) between the transmitting terminal and a n-th cluster through an m-th ray at time instant t is represented as: PNG media_image3.png 15 30 media_image3.png Greyscale (t) = PNG media_image4.png 34 85 media_image4.png Greyscale PNG media_image5.png 33 15 media_image5.png Greyscale vT(t) - vAn(t) where PNG media_image6.png 15 10 media_image6.png Greyscale denotes a length of an antenna at the transmitting terminal PNG media_image7.png 15 29 media_image7.png Greyscale denotes a distance vector from a first transmitting antenna to a first cluster on a n-th path through the m-th ray at an initial time, vf (t) and vAn (t) denote moving speeds of the transmitting terminal and the first cluster on the n-th path at time t, respectively; Step 103, modeling an evolution on an array axis; characterizing, by utilizing a generation and disappearance process, generations and disappearances of clusters, wherein for the transmitting terminal, a survival probability of the cluster on the array axis is calculated by a following equation:Psur PNG media_image8.png 31 124 media_image8.png Greyscale where lR denotes a disappearance rate of the cluster, Q, denotes a distance from a first antenna to a p-th antenna at the transmitting PNG media_image9.png 12 65 media_image9.png Greyscale denotes a scenario-dependent coefficient in a spatial domain; similarly, a survival probability of the receiving terminal is: PNG media_image10.png 20 67 media_image10.png Greyscale $E PNG media_image11.png 16 25 media_image11.png Greyscale (Sq= where Sq denotes a distance from a first antenna to a q-th antenna at the receiving terminal, f3 and f3 denote an elevation angle of an antenna array of the transmitting terminal and an elevation angle of an antenna array of the receiving terminal respectively; therefore, a number of newly generated clusters generated by a spatial evolution is represented as: E[Nnew] PNG media_image12.png 31 27 media_image12.png Greyscale (1- Psur PNG media_image13.png 22 47 media_image13.png Greyscale where )LG denotes a generation rate of the clusters; Step 104, modeling a mutual coupling effect between antennas; describing the mutual coupling between the antennas by utilizing an impedance matrix, obtaining a multi-port model by correlating antenna currents and antenna voltages with port currents and port voltages: PNG media_image14.png 27 124 media_image14.png Greyscale where u1,i1 denote port voltages and port currents at the transmitting terminal, respectively and u2,i2 denote port voltages and port currents at the receiving terminal, 18 PNG media_image15.png 15 12 media_image15.png Greyscale PNG media_image16.png 18 30 media_image16.png Greyscale PNG media_image17.png 18 30 media_image17.png Greyscale respectively, PNG media_image18.png 12 21 media_image18.png Greyscale Z22 denote a transmitting impedance matrix and a receiving impedance matrix respectively, and Z12, Z21 denote mutual impedance matrixes; representing, when considering a uniform linear array of isotropic antennas, a mutual coupling effect considering an input and a load impedance as:c= (ZG + ZL PNG media_image19.png 13 10 media_image19.png Greyscale (Z + PNG media_image20.png 14 36 media_image20.png Greyscale where ZG denotes an input impedance of an element in a free space, and ZL is a matched load impedance; a current vector is represented as I and a matrix Z is extended to: PNG media_image21.png 64 68 media_image21.png Greyscale ZL Z12 PNG media_image22.png 62 71 media_image22.png Greyscale ZG+Z Zq2 expressing, after adding the mutual coupling effect, a channel matrix as: G=-H where c and denote a coupling matrix of the receiving terminal and a coupling matrix of the transmitting terminal respectively. Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Alexiou (US Pub No. 2005/0118958) discloses evaluating performance of a multiple input multiple output MIMO communication link. SCHMIDT (US Pub No. 2018/0006741) discloses testing device and testing method with a fading simulator. Any inquiry concerning this communication or earlier communications from the examiner should be directed to PHUOC HUU DOAN whose telephone number is (571)272-7920. The examiner can normally be reached 8:00AM - 4:00PM. 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, LESTER KINCAID can be reached at 571-272-7922. 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. /PHUOC H DOAN/ Primary Examiner, Art Unit 2646
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Prosecution Timeline

Feb 06, 2024
Application Filed
Feb 06, 2026
Non-Final Rejection — §102 (current)

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Prosecution Projections

1-2
Expected OA Rounds
92%
Grant Probability
99%
With Interview (+8.7%)
2y 6m
Median Time to Grant
Low
PTA Risk
Based on 1115 resolved cases by this examiner. Grant probability derived from career allow rate.

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