Prosecution Insights
Last updated: April 19, 2026
Application No. 18/535,760

CHANNEL STATE INFORMATION REFERENCE SIGNAL PORT CONFIGURATION

Non-Final OA §102
Filed
Dec 11, 2023
Examiner
WONG, WARNER
Art Unit
2469
Tech Center
2400 — Computer Networks
Assignee
Qualcomm Incorporated
OA Round
1 (Non-Final)
89%
Grant Probability
Favorable
1-2
OA Rounds
2y 10m
To Grant
96%
With Interview

Examiner Intelligence

Grants 89% — above average
89%
Career Allow Rate
936 granted / 1048 resolved
+31.3% vs TC avg
Moderate +6% lift
Without
With
+6.3%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
41 currently pending
Career history
1089
Total Applications
across all art units

Statute-Specific Performance

§101
6.1%
-33.9% vs TC avg
§103
56.3%
+16.3% vs TC avg
§102
24.7%
-15.3% vs TC avg
§112
2.8%
-37.2% vs TC avg
Black line = Tech Center average estimate • Based on career data from 1048 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 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)(1) the claimed invention was patented, described in a printed publication, or in public use, on sale, or otherwise available to the public before the effective filing date of the claimed invention. Claims 1-30 are rejected under 35 U.S.C. 102(a)(1) as being anticipated by Kim (US 2017/008350) Regarding claims 1 and 17, Kim describes an apparatus/method for wireless communication at a user equipment (UE) (fig. 13, UE 1320), comprising: [one or more memories; and one or more processors, coupled to the one or more memories] (fig. 13 & para. 159, UE with processor 1323 & coupled to memory 1324) configured to cause the UE to: receive a channel state information reference signal (CSI-RS) configuration that associates each CSI-RS port, of a plurality of CSI-RS ports, with a plurality of symbols of a slot (para. 104-106, UE receives CSI-RS configuration from BS about time & frequency to which each antenna port is mapped, wherein a unit time of a subframe is 2 slots, each slot includes plural OFDM symbols, fig. 1 & para. 48), receive, in accordance with the CSI-RS configuration, a CSI-RS port signal, associated with a CSI-RS port of the plurality of CSI-RS ports, over the plurality of symbols (fig. 8 & para. 90, using the CSI-RS configuration, UE properly receives Resource Blocks (RBs) carrying CSI-RSs transmitted using 8 antenna ports (CSI-RS port signal) in a CSI-RS pattern); transmit a CSI report using one or more temporal statistics associated with the CSI-RS port signal (para. 108, UE measures a channel using the received CSI-RS and reports such information comprising CQI, PMI & Rank (statistics) Indicator, which are collectively referred to as CSI, regarding the CSI-transmission period (= temporal statistics)). Regarding claims 2 and 18, Kim describes: wherein the one or more processors, to cause the UE to receive the CSI-RS port signal, are configured to cause the UE to receive the CSI-RS port signal over the plurality of symbols in a resource block (fig. 8 & para. 90, UE receives Resource Blocks (RBs) carrying CSI-RSs transmitted using 8 antenna ports (CSI-RS port signal) comprising OFDM symbols). Regarding claims 3 and 19, Kim describes: wherein the resource block is a first resource block, and wherein the one or more processors, to cause the UE to receive the CSI-RS port signal, are configured to cause the UE to receive the CSI-RS port signal over the plurality of symbols in a second resource block (fig. 8 & para. 90, UE receives [first and second] Resource Blocks (RBs) carrying CSI-RSs transmitted using 8 antenna ports (CSI-RS port signal) comprising OFDM symbols, where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52). Regarding claims 4 and 20, Kim describes: wherein the one or more processors, to cause the UE to receive the CSI-RS port signal, are configured to cause the UE to receive the CSI-RS port signal in a first plurality of alternating resource blocks including the first resource block and the second resource block, and wherein the one or more processors are further configured to cause the UE to: refrain from receiving any CSI-RS port signal associated with the CSI-RS port in a second plurality of alternating resource blocks (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth (alternating) subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal comprising a first plurality of alternating RBs and refrain receiving CSI-RS port signal from second plurality of alternating RBs). Regarding claims 5 and 21, Kim describes: cause the UE to receive the CSI-RS port signal in a first resource block over one or more first symbols of the plurality of symbols and in a second resource block over one or more second symbols of the plurality of symbols (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal in a first resource block over one or more first symbols plus in a second resource block over one or more first symbols). Regarding claims 6 and 22, Kim describes: wherein the first resource block (RB) and the second resource block (RB) are consecutive resource blocks (RBs) (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth subframe, each subframe comprises 2 slots where N.sup DL is the number of [consecutive] RBs in each downlink slot sent from BS to UE, para. 52). Regarding claim 7 and 23, Kim describes: the one or more processors, to cause the UE to receive the CSI-RS port signal, are configured to cause the UE to receive the CSI-RS port signal in a first plurality of alternating resource blocks including the first resource block and in a second plurality of alternating resource blocks including the second resource block (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth (alternating) subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal in a first resource block over one or more first symbols plus in a second resource block over one or more first symbols). Regarding claim 8, Kim describes: wherein the CSI-RS configuration is associated with multi-user multiple input multiple output (MU-MIMO) communication (fig. 5 & para. 55-58, CSI-RS configuration is associated with antenna ports in a wireless MIMO communication system shared by user equipments (MU-MIMO), para. 6). Regarding claims 9 and 24, Kim describes an apparatus/method for wireless communication at a network node (fig. 13, BS 1310), comprising: one or more memories; and one or more processors, coupled to the one or more memories, configured to cause the network node to (fig. 13 & para. 159, BS with processor 1313 & coupled to memory 1314) configured to cause the UE to: transmit a channel state information reference signal (CSI-RS) configuration that associates each CSI-RS port, of a plurality of CSI-RS ports, with a plurality of symbols of a slot; transmit, in accordance with the CSI-RS configuration, a CSI-RS port signal, associated with a CSI-RS port of the plurality of CSI-RS ports, over the plurality of symbols (para. 104-106, BS transmits CSI-RS configuration to UE about time & frequency to which each antenna port is mapped, wherein a unit time of a subframe is 2 slots, each slot includes plural OFDM symbols, fig. 1 & para. 48); and receive a CSI report using one or more temporal statistics associated with the CSI-RS port signal (para. 108, UE measures a channel using the received CSI-RS and reports such information comprising CQI, PMI & Rank (statistics) Indicator, which are collectively referred to as CSI, regarding the CSI-transmission period (= temporal statistics)). Regarding claims 10 and 25, Kim describes: wherein the one or more processors, to cause the network node to transmit the CSI-RS port signal, are configured to cause the network node to transmit the CSI-RS port signal over the plurality of symbols in a resource block (fig. 8 & para. 90, BS transmits Resource Blocks (RBs) to UE carrying CSI-RSs transmitted using 8 antenna ports (CSI-RS port signal) comprising OFDM symbols). Regarding claims 11 and 26, Kim describes: wherein the resource block is a first resource block, and wherein the one or more processors, to cause the network node to transmit the CSI-RS port signal, are configured to cause the network node to transmit the CSI-RS port signal over the plurality of symbols in a second resource block (fig. 8 & para. 90, BS transmits [first and second] Resource Blocks (RBs) carrying CSI-RSs transmitted using 8 antenna ports (CSI-RS port signal) comprising OFDM symbols, where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52). Regarding claims 12 and 27, Kim describes: wherein the one or more processors, to cause the network node to transmit the CSI-RS port signal, are configured to cause the network node to transmit the CSI-RS port signal in a first plurality of alternating resource blocks including the first resource block and the second resource block, and wherein the one or more processors are further configured to cause the network node to: refrain from transmitting any CSI-RS port signal associated with the CSI-RS port in a second plurality of alternating resource blocks (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth (alternating) subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal comprising a first plurality of alternating RBs and refrain receiving CSI-RS port signal from second plurality of alternating RBs). Regarding claims 13 and 28, Kim describes: wherein the one or more processors, to cause the network node to transmit the CSI-RS port signal, are configured to cause the network node to transmit the CSI-RS port signal in a first resource block over one or more first symbols of the plurality of symbols and in a second resource block over one or more second symbols of the plurality of symbols (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal in a first resource block over one or more first symbols plus in a second resource block over one or more first symbols). Regarding claims 14 and 29, Kim describes: wherein the first resource block and the second resource block are consecutive resource blocks (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth subframe, each subframe comprises 2 slots where N.sup DL is the number of [consecutive] RBs in each downlink slot sent from BS to UE, para. 52). Regarding claims 15 and 30, Kim describes: wherein the one or more processors, to cause the network node to transmit the CSI-RS port signal, are configured to cause the network node to transmit the CSI-RS port signal in a first plurality of alternating resource blocks including the first resource block and in a second plurality of alternating resource blocks including the second resource block (fig. 9 & para. 107, CSI-RS is periodically transmitting at every Nth (alternating) subframe, each subframe comprises 2 slots where N.sup DL is the number of RBs in each downlink slot sent from BS to UE, para. 52. Hence, it may be view as: UE receives DL port signal in a first resource block over one or more first symbols plus in a second resource block over one or more first symbols). Regarding claim 16, Kim describes: wherein the CSI-RS configuration is associated with multi-user multiple input multiple output (MU-MIMO) communication (fig. 5 & para. 55-58, CSI-RS configuration is associated with antenna ports in a wireless MIMO communication system shared by user equipments (MU-MIMO), para. 6). Conclusion The prior art made of record and not relied upon is considered pertinent to applicant's disclosure: Kim (US 2016/0094287) describing provision of CSI-RS configuration information in wireless communication system supporting multiple antennas, Sayana (US 20130114656) describing UE receives from BS CSI-RS configuration representing antenna ports for CSI feedback (title & fig. 11) with different CSI-RS patterns for corresponding # antenna ports (fig. 5-8), Kim (US 2017/0310449) describing receiving RS configuration & RS for CQI reporting (fig. 8), reference signal configuration defined by P number of antenna ports (abstract), Xiao (US 2013/0196675) describing eNB signals CSI-RS resources for UE to measure signal on selected CSI-RS resources & generate the CQI reports (fig. 4), Zhang (WO2024174134) describing CSI feedback for port adaptation where each of the CSI-RSs consists of each sequence and the each sequence is distinguished by a node index, a port number, or a virtual cell ID (para. 30), Kakishima (US 2019/044599) describing UE comprising a receiver that receives a Reference Signal (RS) from a base station in alternating subcarriers' symbols as the CSI-RS arrangement configuration (fig. 14A & para. 33), Yang (US 2017/0048740) describing UE receives configuration message for CSI reporting (title & fig. 7-9), Kuang (WO 2024156460) describing base station reporting prediction results (fig. 8), Yang (WO 2012124552) describing CSI feedback method comprising receiving from a BS a CSI-RS measurement set configuration signal which contains an indication of a CSI-RS measurement set configured for a UE; measuring a CSI-RS in the CSI-RS measurement set based on the indication of the CSI-RS measurement set to obtain metric information corresponding to a CSI-RS pattern in the CSI-RS measurement set; obtaining a CSI-RS report set which is selected from the CSI-RS measurement set based on the metric information; determining a CSI feedback resource corresponding to a CSI-RS pattern in the CSI-RS report set; and feeding back CSI corresponding to the CSI-RS pattern in the CSI-RS report set to the BS over the determined CSI feedback resource (abstract), and Park (US 2013/0315197) & (US 2013/0094384) each describing CSI-RS signaling where each of the CSI-RSs consists of each sequence and the each sequence is distinguished by a node index, a port number, or a virtual cell ID (fig. 3 & para. 30). Any inquiry concerning this communication or earlier communications from the examiner should be directed to WARNER WONG whose telephone number is (571)272-8197. The examiner can normally be reached M-F 7am - 3:30pm. 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, Ian Moore can be reached at 571-272-3085. 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. WARNER WONG Primary Examiner Art Unit 2469 /WARNER WONG/Primary Examiner, Art Unit 2469
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Prosecution Timeline

Dec 11, 2023
Application Filed
Feb 07, 2026
Non-Final Rejection — §102
Apr 16, 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
89%
Grant Probability
96%
With Interview (+6.3%)
2y 10m
Median Time to Grant
Low
PTA Risk
Based on 1048 resolved cases by this examiner. Grant probability derived from career allow rate.

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