Prosecution Insights
Last updated: July 17, 2026
Application No. 18/476,664

CSI FEEDBACK METHOD, RELATED DEVICE, AND READABLE STORAGE MEDIUM

Non-Final OA §103
Filed
Sep 28, 2023
Priority
Mar 30, 2021 — CN 202110340904.9 +1 more
Examiner
FUQUA, CHRISTINE DUONG
Art Unit
2462
Tech Center
2400 — Computer Networks
Assignee
Vivo Mobile Communication Co., Ltd.
OA Round
3 (Non-Final)
83%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 83% — above average
83%
Career Allowance Rate
554 granted / 668 resolved
+24.9% vs TC avg
Strong +19% interview lift
Without
With
+18.9%
Interview Lift
resolved cases with interview
Typical timeline
2y 11m
Avg Prosecution
23 currently pending
Career history
695
Total Applications
across all art units

Statute-Specific Performance

§101
0.8%
-39.2% vs TC avg
§103
87.5%
+47.5% vs TC avg
§102
4.7%
-35.3% vs TC avg
§112
1.8%
-38.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 668 resolved cases

Office Action

§103
DETAILED ACTION This is in response to the Applicant's arguments and amendments filed on 08 April 2026 in which claims 1-2, 4, 6, 8-11, 13-20, 22-24 are currently pending and claims 3, 5, 7, 12, 21 have been cancelled. 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 29 April 2026 has been entered. Claim Objections Claims 1, 17, 18, 20, 23 are objected to because of the following informalities: Regarding independent claims 1, 17, 18, it is unclear what is meant by the claimed limitation “IMR” and “CMR” and it is suggested to spell out the acronyms “IMR” and “CMR”. Claim 18 is directed to a terminal, which is considered a machine. A machine is defined as “a concrete thing, consisting of parts, or of certain devices and combination of devices” (MPEP 2106). However, the body of the claim does not consist of at least two parts/components; it consists of a series of steps. The preamble comprises parts/components; however, those parts/components should be positively recited in the body of the claim. Regarding claim 20, it is suggested to replace the claimed limitation “A non-transitory readable storage medium” to --A non-transitory computer-readable storage medium--. Regarding claim 23, it is unclear whether the claimed limitation is a near substantial duplicate to the last limitation of the newly amended claim 18. Appropriate correction is required. Claim Rejections - 35 USC § 103 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 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. Claims 1, 14-20, 22-24 are rejected under 35 U.S.C. 103 as being unpatentable over Hao et al. (PG Pub US 2023/0061722 A1) in view of Hao et al. (PG Pub US 2023/0087003 A1 hereafter Hao2) and Zhang et al. (WO 2020/143748 A1 with a machine translation copy attached herein). Regarding claims 1, 18, 20, Hao discloses a channel state information CSI feedback method, a terminal, and a non-transitory readable storage medium. a processor, a memory, and a program or instructions stored in the memory and executable on the processor, wherein the program or instructions are executed by the processor to implement (figs. 2, 25): obtaining, N CSI report configurations, wherein the N CSI report configurations are used for determining M pieces of first information (“A UE (e.g., such as a UE 120a) may be configured by a BS (e.g., such as a BS 110) for CSI reporting. The BS may configure the UE with a CSI reporting configuration or with multiple CSI report configurations” [0068], “Each CSI report configuration may be associated with a single downlink bandwidth part (BWP). The CSI report setting configuration may define a CSI reporting band as a subset of subbands of the BWP. The associated DL BWP may indicated by a higher layer parameter (e.g., bwp-Id) in the CSI report configuration for channel measurement and contains parameter(s) for one CSI reporting band, such as codebook configuration, time-domain behavior, frequency granularity for CSI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE” [0069], “The CSI report configuration can also configure the CSI parameters (sometimes referred to as quantities) to be reported. Codebooks may include Type I single panel, Type I multi-panel, and Type II single panel. Regardless which codebook is used, the CSI report may include at least the channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), and rank indicator (RI). The structure of the PMI may vary based on the codebook. The CRI, RI, and CQI may be in a first part (Part I) and the PMI may be in a second part (Part II) of the CSI report” [0072]); and sending, a first CSI report, wherein the first CSI report is calculated based on the M pieces of first information (“The UE may report the CSI feedback based on the CSI report configuration and the CSI report trigger. For example, the UE may measure the channel associated with CSI for the triggered CSI-RS resources. Based on the measurements, the UE may select a preferred CSI-RS resource. The UE reports the CSI feedback for the selected CSI-RS resource” [0071], “The UE reports the CSI feedback for the selected CSI-RS resource. LI may be calculated conditioned on the reported CQI, PMI, RI and CRI; CQI may be calculated conditioned on the reported PMI, RI and CRI; PMI may be calculated conditioned on the reported RI and CRI; and RI may be calculated conditioned on the reported CRI” [0075]); the first information is any one of the following: first reference signal resource, and first parameter corresponding to the first reference signal resource; N is a positive integer; and M is an integer greater than 1 (“Each CSI report configuration may be associated with a single downlink bandwidth part (BWP). The CSI report setting configuration may define a CSI reporting band as a subset of subbands of the BWP. The associated DL BWP may indicated by a higher layer parameter (e.g., bwp-Id) in the CSI report configuration for channel measurement and contains parameter(s) for one CSI reporting band, such as codebook configuration, time-domain behavior, frequency granularity for CSI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE” [0069], “The CSI report configuration can also configure the CSI parameters (sometimes referred to as quantities) to be reported. Codebooks may include Type I single panel, Type I multi-panel, and Type II single panel. Regardless which codebook is used, the CSI report may include at least the channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), and rank indicator (RI). The structure of the PMI may vary based on the codebook. The CRI, RI, and CQI may be in a first part (Part I) and the PMI may be in a second part (Part II) of the CSI report” [0072], “Channel estimation using pilots, such as CSI reference signals (CSI-RS), may be performed to determine these effects on the channel” [0067]). However, Hao does not explicitly disclose in a case that N is equal to 1, the CSI report configuration is configured with one first field, wherein the first field corresponds to M pieces of restriction information, and the M pieces of restriction information correspond to the M pieces of first information, wherein each restriction information comprises at least one of: codebook restriction information, rank indicator RI restriction information, and port restriction information; wherein the first field comprises a codebook configuration field. Nevertheless, Hao2 discloses “the first CSI report configuration and the second CSI report configuration may indicate respective channel measurement resources (CMR), interference measurement resources (IMR), and/or codebook configurations (e.g., numbers of ports, codebook types, codebook subset restrictions, and/or the like)” [0155], “the RI pair restriction indicates one or more combinations of rank indications that are permitted to be included in a first CSI report” [0153]. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the claimed invention to have in a case that N is equal to 1, the CSI report configuration is configured with one first field, wherein the first field corresponds to M pieces of restriction information, and the M pieces of restriction information correspond to the M pieces of first information, wherein each restriction information comprises at least one of: codebook restriction information, rank indicator RI restriction information, and port restriction information; wherein the first field comprises a codebook configuration field because it will allow “correlating multiple channel state information reports for multi-layer communication” [0151]. In addition, Hao, Hao2 discloses everything claimed as applied above. However, Hao, Hao2 does not explicitly disclose in one IMR resource set configured in one CSI report configuration, each IMR of the last T IMR resources correspond to multiple CMRs, and each IMR of the remaining IMRs correspond to one CMR, wherein the T is a positive integer. Nevertheless, Zhang discloses “The number of CMRs may be one or more, and the number of IMRs may also be one or more, that is, the network device 110 may be configured with one CMR and one IMR, or may be configured with multiple CMRs and multiple IMRs, and may also be configured One CMR and multiple IMRs can also be configured with multiple CMRs and one IMR” (under “Configuration method one”), “Independent coding can improve the flexibility of resource mapping”. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the claimed invention to have in one IMR resource set configured in one CSI report configuration, each IMR of the last T IMR resources correspond to multiple CMRs, and each IMR of the remaining IMRs correspond to one CMR because “Independent coding can improve the flexibility of resource mapping”. Regarding claim 14, Hao, Hao2, Zhang discloses everything claimed as applied above. In addition, Hao discloses the first parameter comprises CMR group (“a CMR port group or port-group pair” [0116]). Regarding claim 15, Hao, Hao2, Zhang discloses everything claimed as applied above. In addition, Hao discloses the first field comprises at least one of the following: non-precoding matrix port indication field; report configuration type field; report quantity field; channel quality indicator CQI table field; or subband size field (“The CSI report setting configuration may define a CSI reporting band as a subset of subbands of the BWP. The associated DL BWP may indicated by a higher layer parameter (e.g., bwp-Id) in the CSI report configuration for channel measurement and contains parameter(s) for one CSI reporting band, such as codebook configuration, time-domain behavior, frequency granularity for CSI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE” [0069]). Regarding claim 16, Hao, Hao2, Zhang discloses everything claimed as applied above. In addition, Hao discloses the N CSI report configurations are indicated by higher layer signaling or MAC CE (“The BS may provide the CSI reporting configuration to the UE via higher layer signaling, such as radio resource control (RRC) signaling (e.g., via a CSI-ReportConfig information element (IE))” [0068], “a medium access control (MAC) control element (CE)” [0071]). Regarding claims 17, 19, Hao discloses a CSI feedback method and a network-side device. sending, by a network-side device, N CSI report configurations, wherein the N CSI report configurations are used for determining M pieces of first information (“A UE (e.g., such as a UE 120a) may be configured by a BS (e.g., such as a BS 110) for CSI reporting. The BS may configure the UE with a CSI reporting configuration or with multiple CSI report configurations” [0068], “Each CSI report configuration may be associated with a single downlink bandwidth part (BWP). The CSI report setting configuration may define a CSI reporting band as a subset of subbands of the BWP. The associated DL BWP may indicated by a higher layer parameter (e.g., bwp-Id) in the CSI report configuration for channel measurement and contains parameter(s) for one CSI reporting band, such as codebook configuration, time-domain behavior, frequency granularity for CSI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE” [0069], “The CSI report configuration can also configure the CSI parameters (sometimes referred to as quantities) to be reported. Codebooks may include Type I single panel, Type I multi-panel, and Type II single panel. Regardless which codebook is used, the CSI report may include at least the channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), and rank indicator (RI). The structure of the PMI may vary based on the codebook. The CRI, RI, and CQI may be in a first part (Part I) and the PMI may be in a second part (Part II) of the CSI report” [0072]); and receiving, by the network-side device, a first CSI report, wherein the first CSI report is calculated based on the M pieces of first information (“The UE may report the CSI feedback based on the CSI report configuration and the CSI report trigger. For example, the UE may measure the channel associated with CSI for the triggered CSI-RS resources. Based on the measurements, the UE may select a preferred CSI-RS resource. The UE reports the CSI feedback for the selected CSI-RS resource” [0071], “The UE reports the CSI feedback for the selected CSI-RS resource. LI may be calculated conditioned on the reported CQI, PMI, RI and CRI; CQI may be calculated conditioned on the reported PMI, RI and CRI; PMI may be calculated conditioned on the reported RI and CRI; and RI may be calculated conditioned on the reported CRI” [0075]); wherein the first information is any one of the following: first reference signal resource, and first parameter corresponding to the first reference signal resource; N is a positive integer; and M is an integer greater than 1 (“Each CSI report configuration may be associated with a single downlink bandwidth part (BWP). The CSI report setting configuration may define a CSI reporting band as a subset of subbands of the BWP. The associated DL BWP may indicated by a higher layer parameter (e.g., bwp-Id) in the CSI report configuration for channel measurement and contains parameter(s) for one CSI reporting band, such as codebook configuration, time-domain behavior, frequency granularity for CSI, measurement restriction configurations, and the CSI-related quantities to be reported by the UE” [0069], “The CSI report configuration can also configure the CSI parameters (sometimes referred to as quantities) to be reported. Codebooks may include Type I single panel, Type I multi-panel, and Type II single panel. Regardless which codebook is used, the CSI report may include at least the channel quality indicator (CQI), precoding matrix indicator (PMI), CSI-RS resource indicator (CRI), and rank indicator (RI). The structure of the PMI may vary based on the codebook. The CRI, RI, and CQI may be in a first part (Part I) and the PMI may be in a second part (Part II) of the CSI report” [0072]). However, Hao does not explicitly disclose in a case that N is equal to 1, the CSI report configuration is configured with one first field, wherein the first field corresponds to M pieces of restriction information, and the M pieces of restriction information correspond to the M pieces of first information, wherein each restriction information comprises at least one of: codebook restriction information, rank indicator RI restriction information, and port restriction information; wherein the first field comprises a codebook configuration field. Nevertheless, Hao2 discloses “the first CSI report configuration and the second CSI report configuration may indicate respective channel measurement resources (CMR), interference measurement resources (IMR), and/or codebook configurations (e.g., numbers of ports, codebook types, codebook subset restrictions, and/or the like)” [0155], “the RI pair restriction indicates one or more combinations of rank indications that are permitted to be included in a first CSI report” [0153]. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the claimed invention to have in a case that N is equal to 1, the CSI report configuration is configured with one first field, wherein the first field corresponds to M pieces of restriction information, and the M pieces of restriction information correspond to the M pieces of first information, wherein each restriction information comprises at least one of: codebook restriction information, rank indicator RI restriction information, and port restriction information; wherein the first field comprises a codebook configuration field because it will allow “correlating multiple channel state information reports for multi-layer communication” [0151]. In addition, Hao, Hao2 discloses everything claimed as applied above. However, Hao, Hao2 does not explicitly disclose in one IMR resource set configured in one CSI report configuration, each IMR of the last T IMR resources correspond to multiple CMRs, and each IMR of the remaining IMRs correspond to one CMR, wherein the T is a positive integer. Nevertheless, Zhang discloses “The number of CMRs may be one or more, and the number of IMRs may also be one or more, that is, the network device 110 may be configured with one CMR and one IMR, or may be configured with multiple CMRs and multiple IMRs, and may also be configured One CMR and multiple IMRs can also be configured with multiple CMRs and one IMR” (under “Configuration method one”). Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the claimed invention to have in one IMR resource set configured in one CSI report configuration, each IMR of the last T IMR resources correspond to multiple CMRs, and each IMR of the remaining IMRs correspond to one CMR because “Independent coding can improve the flexibility of resource mapping”. Regarding claim 23, Hao, Hao2, Zhang discloses everything claimed as applied above. In addition, Hao discloses in one IMR resource set configured in the N CSI report configuration, each IMR of the first T or last T IMR resources correspond to multiple CMRs, and each IMR of the remaining IMRs correspond to one CMR, wherein the T is a positive integer (“The CMR and IMR may be associated via a CSI resource indicator (CRI) or a rank indicator (RI)-pair. For example, the CMR and IMR may be associated by a one-to-one mapping between a codepoint (CRI or RI-pair) and the IMR, the codepoint corresponding to one or more CMRs” [0100], “there may be a one-to-one mapping between a CRI codepoint (corresponding to a CMR or CMR-pair) and a NZP-IMR set, as shown in FIG. 14. Alternatively, there exists a mapping between one NZP-IMR set to a CMR pair. In mTRP, multiple NZP-IMR sets may be used. As shown in FIG. 14, the NZP-IMR sets may be mapped to the CRI codepoints, corresponding to the CMRs, in addition to the CSI-IMRs. For example, the first CSI report may have a first CRI codepoint (e.g., CRI 0) that further maps to a first NZP-IMR set (e.g., s1) for the mTRP scenario shown in FIG. 12A. The second CSI report may have a first CRI codepoint (e.g., CRI 0) that further maps to a second NZP-IMR set (e.g., s2) for the mTRP scenario” [0113]). Regarding claims 22, 24, Hao, Hao2, Zhang discloses everything claimed as applied above. In addition, Hao discloses the T is indicated by higher layer signaling (“The BS may provide the CSI reporting configuration to the UE via higher layer signaling, such as radio resource control (RRC) signaling (e.g., via a CSI-ReportConfig information element (IE))” [0068]). Claim 2 is rejected under 35 U.S.C. 103 as being unpatentable over Hao, Hao2, Zhang in view of Hao et al. (PG Pub US 2021/0314043 A1 hereafter Hao3). Regarding claim 2, Hao, Hao2, Zhang discloses everything claimed as applied above. However, Hao, Hao2, Zhang does not explicitly disclose the N CSI report configurations are configured with P first fields, and the first CSI report is calculated based on the M pieces of first information and the P first fields, wherein P is a positive integer. Nevertheless, Hao3 discloses “the CSI report configuration may have a field resourcesForChannel providing a CSI-RS resource set for channel measurements .. Next, the field resourcesForChannel may also include a field qcl-info providing QCL, information for each CSI-RS port group (e.g., field qcl-info-PortGroup1 is linked to a TCI state with the provided TCI-StateId, and field qcl-info-PortGroup2 is linked to another TCI state with the provided TCI-StateId) of each NZP CSI-RS resource. The CSI report configuration links to one resource set, which has one or more resources. The field qcl-info identifies one or more TCI states, and each of the TCI states is linked to a CSI-RS port group of a resource” [0092], [0094]. Therefore, it would have been obvious to a person having ordinary skill in the art before the effective filing date of the claimed invention to have the N CSI report configurations be configured with P first fields, and the first CSI report is calculated based on the M pieces of first information and the P first fields, wherein P is a positive integer because it will allow “providing quasi-colocation ((SCL) signaling for groups of non-zero power channel state information reference signal (NZP CSI-RS) ports across scenarios involving multiple cells and/or multiple panels (multi-panel)” [0031]. Allowable Subject Matter Claims 4, 6, 8-11, 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 and the objection as described above are addressed. Response to Arguments Applicant’s arguments have been considered but are moot because the new ground of rejection does not rely on any reference applied in the prior rejection of record for any teaching or matter specifically challenged in the argument. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHRISTINE D FUQUA whose telephone number is (571)270-1664. The examiner can normally be reached Monday - Friday 8 AM - 6 PM EST with every other Friday off. 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, Yemane Mesfin can be reached at (571)272-3927. 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. CHRISTINE DUONG FUQUA Primary Examiner Art Unit 2462 /CHRISTINE T DUONG/Primary Examiner, Art Unit 2462 06/11/2026
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Prosecution Timeline

Sep 28, 2023
Application Filed
Sep 26, 2025
Non-Final Rejection mailed — §103
Dec 22, 2025
Response Filed
Feb 12, 2026
Final Rejection mailed — §103
Apr 08, 2026
Response after Non-Final Action
Apr 29, 2026
Request for Continued Examination
May 04, 2026
Response after Non-Final Action
Jun 16, 2026
Non-Final Rejection mailed — §103 (current)

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Prosecution Projections

3-4
Expected OA Rounds
83%
Grant Probability
99%
With Interview (+18.9%)
2y 11m (~1m remaining)
Median Time to Grant
High
PTA Risk
Based on 668 resolved cases by this examiner. Grant probability derived from career allowance rate.

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