Prosecution Insights
Last updated: July 17, 2026
Application No. 18/158,216

CHANNEL PARAMETER OBTAINING METHOD AND APPARATUS

Final Rejection §103
Filed
Jan 23, 2023
Priority
Jul 27, 2020 — CN 202010732208.8 +1 more
Examiner
NGUYEN, LIEM HONG
Art Unit
2416
Tech Center
2400 — Computer Networks
Assignee
Huawei Technologies Co., Ltd.
OA Round
2 (Final)
72%
Grant Probability
Favorable
3-4
OA Rounds
0m
Est. Remaining
95%
With Interview

Examiner Intelligence

Grants 72% — above average
72%
Career Allowance Rate
170 granted / 235 resolved
+14.3% vs TC avg
Strong +23% interview lift
Without
With
+23.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 10m
Avg Prosecution
19 currently pending
Career history
263
Total Applications
across all art units

Statute-Specific Performance

§101
0.5%
-39.5% vs TC avg
§103
91.7%
+51.7% vs TC avg
§102
4.8%
-35.2% vs TC avg
§112
2.7%
-37.3% vs TC avg
Black line = Tech Center average estimate • Based on career data from 235 resolved cases

Office Action

§103
DETAILED ACTION This communication is in response to applicant's response filed under 37 C.F.R. §1.111, dated October 23, 2025 in response to a non-final office action. Claims 1, 3-5, and 10-18 have been amended. Claims 1-18 are subject to examination and have been examined. Acknowledgement is made to the following amendments made by the Applicant: Applicant's amendment to claims 10-13 to obviate the previous objection to claims 10-13. The previous objection to the said claims is hereby withdrawn. Response to Arguments Applicant's arguments with respect to the claims have been considered but are moot in view of the new grounds of rejection. Claim Objections Claims 14 and 15 are objected to because of the following informalities: Regarding claims 14 and 15, the claims are directed at a “communication apparatus”; for consistency, all occurrences of “communications apparatus” should be changed to “communication apparatus” (Emphases added). 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 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 1-2, 5-7, 10-11, and 14-16 are rejected under 35 U.S.C. 103 as being unpatentable over Hao et.al. (US Patent Application Publication, 20230163911, hereinafter, “Hao”) in view of Liu et.al. (US Patent Application Publication, 20230075037, hereinafter, “Liu”). Regarding claim 1, Hao teaches: A method comprising: sending, by a network device, a precoded reference signal and indication information indicating K selected frequency domain bases, wherein the precoded reference signal is generated on P ports by mapping K virtual ports associated with the K selected frequency domain bases to each of the P ports through beamforming, wherein K is an integer greater than 1, wherein the P ports are precoded channel state information reference signal (CSI-RS) ports of the network device and user equipment (Hao: [0145] ... In the many-to-one mapping technique, each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may select the CSI-RS ports within one of the plurality of CSI-RS resources to report the CSI ... In another non-limiting example, each CSI-RS resource of the plurality of CSI-RS resources may be mapped to multiple virtual ports (e.g., multiple pairs of SD and FD bases) … [0146] In some examples, the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources ... In some cases, the UE may determine whether each of the first number of CSI-RS ports [i.e., P ports] is mapped to more than one of the second number of virtual CSI-RS ports [i.e., K virtual ports] (e.g., pairs of SD and FD [frequency domain] bases). When each of the first number of CSI-RS ports may be mapped to more than one of the second number of virtual CSI-RS ports (e.g., SD-FD bases pairs), the UE make select one or more virtual CSI-RS ports (e.g., SD-FD bases pairs) from the second number of virtual CSI-RS ports (i.e., SD-FD bases pairs) …); and receiving, by the network device, a linear superposition coefficient sent by the user equipment, wherein the linear superposition coefficient corresponds to M frequency domain bases in the K selected frequency domain bases and T ports in the P ports, wherein 1<=T<=P, and 1<=M<=K (Hao: [0157] In a first aspect, a method for wireless communication by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI … computing at least wideband linear combination coefficients for the selected CSI-RS ports; and providing the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report … [0158] In a second aspect, alone or in combination with the first aspect, the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port …). Although Hao teaches each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources, the UE may determine whether each of the first number of CSI-RS ports is mapped to more than one of the second number of virtual CSI-RS ports (e.g., pairs of SD and FD bases), Hao does not explicitly teach: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs. However, in the same field of endeavor, Liu teaches: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs (Liu: [0203] Specifically, due to the reciprocity of the angle information and the delay information of the uplink and downlink channels, namely the equivalence between uplink and downlink channels in terms of the angle information and the delay information, the uplink and downlink channels correspond to the same spatial domain basis vectors and frequency domain basis vectors. After receiving the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, instead of calculating the angle information and delay information of the downlink channel, the terminal can directly use the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, to obtain the spatial domain basis vectors and frequency domain basis vectors that can be used to determine the angle information and delay information of the downlink channel, and then select the ports for data transmission, and generate port indication information and port combination coefficients corresponding to each port indicated by the port indication information. Immediately, the terminal feeds back the port indication information and the port combination coefficients to the network side, and the network side receives the port indication information and port combination coefficients fed back by the terminal.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao to include the features as taught by Liu above in order to reduce feedback overhead. (Liu, ¶ [0205]). Regarding claim 5, Hao teaches: A method comprising: receiving, by user equipment, indication information domain bases and a precoded reference signal, wherein the precoded reference signal is generated on P ports by mapping K virtual ports associated with the K selected frequency domain bases to each of the P ports through beamforming wherein K is an integer greater than 1, wherein the P ports are precoded channel state information reference signal (CSI-RS) ports of a network device and the user equipment (Hao: [0145] ... In the many-to-one mapping technique, each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may select the CSI-RS ports within one of the plurality of CSI-RS resources to report the CSI ... In another non-limiting example, each CSI-RS resource of the plurality of CSI-RS resources may be mapped to multiple virtual ports (e.g., multiple pairs of SD and FD bases) … [0146] In some examples, the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources ... In some cases, the UE may determine whether each of the first number of CSI-RS ports [i.e., P ports] is mapped to more than one of the second number of virtual CSI-RS ports [i.e., K virtual ports] (e.g., pairs of SD and FD [frequency domain] bases). When each of the first number of CSI-RS ports may be mapped to more than one of the second number of virtual CSI-RS ports (e.g., SD-FD bases pairs), the UE make select one or more virtual CSI-RS ports (e.g., SD-FD bases pairs) from the second number of virtual CSI-RS ports (i.e., SD-FD bases pairs) …); obtaining, by the user equipment, a linear superposition coefficient based on the indication information and the precoded reference signal, wherein the linear superposition coefficient corresponds to M frequency domain bases in the K selected frequency domain bases and T ports in the P ports, wherein 1<=T<=P, and 1<=M<=K; and sending, by the user equipment, the linear superposition coefficient to the network device (Hao: [0157] In a first aspect, a method for wireless communication by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI … computing at least wideband linear combination coefficients for the selected CSI-RS ports; and providing the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report … [0158] In a second aspect, alone or in combination with the first aspect, the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port …). Although Hao teaches each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources, the UE may determine whether each of the first number of CSI-RS ports is mapped to more than one of the second number of virtual CSI-RS ports (e.g., pairs of SD and FD bases), Hao does not explicitly teach: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs. However, in the same field of endeavor, Liu teaches: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs (Liu: [0203] Specifically, due to the reciprocity of the angle information and the delay information of the uplink and downlink channels, namely the equivalence between uplink and downlink channels in terms of the angle information and the delay information, the uplink and downlink channels correspond to the same spatial domain basis vectors and frequency domain basis vectors. After receiving the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, instead of calculating the angle information and delay information of the downlink channel, the terminal can directly use the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, to obtain the spatial domain basis vectors and frequency domain basis vectors that can be used to determine the angle information and delay information of the downlink channel, and then select the ports for data transmission, and generate port indication information and port combination coefficients corresponding to each port indicated by the port indication information. Immediately, the terminal feeds back the port indication information and the port combination coefficients to the network side, and the network side receives the port indication information and port combination coefficients fed back by the terminal.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao to include the features as taught by Liu above in order to reduce feedback overhead. (Liu, ¶ [0205]). Regarding claim 10, Hao teaches: A communication apparatus, comprising: a transceiver; at least one processor; and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the communication apparatus to: send a precoded reference signal and indication information indicating K selected frequency domain bases, wherein the precoded reference signal is generated on P ports by mapping K virtual ports associated with the K selected frequency domain bases to each of the P ports through beamforming, wherein K is an integer greater than 1, wherein the P ports are precoded channel state information reference signal (CSI-RS) ports of the communication apparatus and user equipment (Hao: [0145] ... In the many-to-one mapping technique, each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may select the CSI-RS ports within one of the plurality of CSI-RS resources to report the CSI ... In another non-limiting example, each CSI-RS resource of the plurality of CSI-RS resources may be mapped to multiple virtual ports (e.g., multiple pairs of SD and FD bases) … [0146] In some examples, the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources ... In some cases, the UE may determine whether each of the first number of CSI-RS ports [i.e., P ports] is mapped to more than one of the second number of virtual CSI-RS ports [i.e., K virtual ports] (e.g., pairs of SD and FD [frequency domain] bases). When each of the first number of CSI-RS ports may be mapped to more than one of the second number of virtual CSI-RS ports (e.g., SD-FD bases pairs), the UE make select one or more virtual CSI-RS ports (e.g., SD-FD bases pairs) from the second number of virtual CSI-RS ports (i.e., SD-FD bases pairs) …); and receive a linear superposition coefficient sent by the user equipment, wherein the linear superposition coefficient corresponds to M frequency domain bases in the K selected frequency domain bases and T ports in the P ports, wherein 1<=T<=P, and 1<=M<=K (Hao: [0157] In a first aspect, a method for wireless communication by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI … computing at least wideband linear combination coefficients for the selected CSI-RS ports; and providing the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report … [0158] In a second aspect, alone or in combination with the first aspect, the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port …). Although Hao teaches each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources, the UE may determine whether each of the first number of CSI-RS ports is mapped to more than one of the second number of virtual CSI-RS ports (e.g., pairs of SD and FD bases), Hao does not explicitly teach: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs. However, in the same field of endeavor, Liu teaches: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs (Liu: [0203] Specifically, due to the reciprocity of the angle information and the delay information of the uplink and downlink channels, namely the equivalence between uplink and downlink channels in terms of the angle information and the delay information, the uplink and downlink channels correspond to the same spatial domain basis vectors and frequency domain basis vectors. After receiving the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, instead of calculating the angle information and delay information of the downlink channel, the terminal can directly use the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, to obtain the spatial domain basis vectors and frequency domain basis vectors that can be used to determine the angle information and delay information of the downlink channel, and then select the ports for data transmission, and generate port indication information and port combination coefficients corresponding to each port indicated by the port indication information. Immediately, the terminal feeds back the port indication information and the port combination coefficients to the network side, and the network side receives the port indication information and port combination coefficients fed back by the terminal.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao to include the features as taught by Liu above in order to reduce feedback overhead. (Liu, ¶ [0205]). Regarding claim 14, Hao teaches: A communication apparatus comprising: a transceiver; at least one processor; and one or more memories coupled to the at least one processor and storing programming instructions for execution by the at least one processor to cause the communications apparatus to: receive indication information indicating K selected frequency domain bases and a precoded reference signal, wherein the precoded reference signal is generated on P ports by mapping K virtual ports associated with the K selected frequency domain bases to each of the P ports through beamforming, wherein K is an integer greater than 1, and wherein the P ports are precoded channel state information reference signal (CSI- RS) ports of a network device and the communication apparatus (Hao: [0145] ... In the many-to-one mapping technique, each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may select the CSI-RS ports within one of the plurality of CSI-RS resources to report the CSI ... In another non-limiting example, each CSI-RS resource of the plurality of CSI-RS resources may be mapped to multiple virtual ports (e.g., multiple pairs of SD and FD bases) … [0146] In some examples, the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources ... In some cases, the UE may determine whether each of the first number of CSI-RS ports [i.e., P ports] is mapped to more than one of the second number of virtual CSI-RS ports [i.e., K virtual ports] (e.g., pairs of SD and FD [frequency domain] bases). When each of the first number of CSI-RS ports may be mapped to more than one of the second number of virtual CSI-RS ports (e.g., SD-FD bases pairs), the UE make select one or more virtual CSI-RS ports (e.g., SD-FD bases pairs) from the second number of virtual CSI-RS ports (i.e., SD-FD bases pairs) …); obtain a linear superposition coefficient based on the indication information and the precoded reference signal, wherein the linear superposition coefficient corresponds to M frequency domain bases in the K selected frequency domain bases and T ports in the P ports, wherein 1<=T<=P, and 1<=M<=K; and send the linear superposition coefficient to the network device (Hao: [0157] In a first aspect, a method for wireless communication by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI … computing at least wideband linear combination coefficients for the selected CSI-RS ports; and providing the selected one or more CSI-RS ports and the computed wideband linear combination coefficients to a base station (BS) in a CSI report … [0158] In a second aspect, alone or in combination with the first aspect, the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port …). Although Hao teaches each CSI-RS port is precoded (or beamformed) via multiple virtual ports (e.g., SD-FD bases pairs), and the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources, the UE may determine whether each of the first number of CSI-RS ports is mapped to more than one of the second number of virtual CSI-RS ports (e.g., pairs of SD and FD bases), Hao does not explicitly teach: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs. However, in the same field of endeavor, Liu teaches: wherein the K selected frequency domain bases of each of the P ports correspond to K angle-delay pairs (Liu: [0203] Specifically, due to the reciprocity of the angle information and the delay information of the uplink and downlink channels, namely the equivalence between uplink and downlink channels in terms of the angle information and the delay information, the uplink and downlink channels correspond to the same spatial domain basis vectors and frequency domain basis vectors. After receiving the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, instead of calculating the angle information and delay information of the downlink channel, the terminal can directly use the beamformed CSI-RSs, or the beamformed CSI-RSs and the frequency domain basis vector indication information, to obtain the spatial domain basis vectors and frequency domain basis vectors that can be used to determine the angle information and delay information of the downlink channel, and then select the ports for data transmission, and generate port indication information and port combination coefficients corresponding to each port indicated by the port indication information. Immediately, the terminal feeds back the port indication information and the port combination coefficients to the network side, and the network side receives the port indication information and port combination coefficients fed back by the terminal.). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao to include the features as taught by Liu above in order to reduce feedback overhead. (Liu, ¶ [0205]). Regarding claims 2, 6, 11, and 15, Hao-Liu discloses on the features with respect to claims 1, 5, 10, and 14 as outlined above. Hao further teaches: wherein the indication information further indicates at least T (Hao: [0146] In some examples, the UE may receive a first number of CSI-RS ports within a CSI-RS resource of the plurality of CSI-RS resources …). Regarding claims 7 and 16, Hao-Liu discloses on the features with respect to claims 5 and 14 as outlined above. Hao further teaches: wherein the obtaining a linear superposition coefficient based on the indication information and the precoded reference signal comprises: determining the K selected frequency domain bases based on the indication information (Hao: [0146] … When each of the first number of CSI-RS ports may be mapped to more than one of the second number of virtual CSI-RS ports (e.g., SD-FD bases pairs), the UE make select one or more virtual CSI-RS ports (e.g., SD-FD bases pairs) from the second number of virtual CSI-RS ports (i.e., SD-FD bases pairs) ...); determining, based on the precoded reference signal, the T ports and the M frequency domain bases for obtaining the linear superposition coefficient; obtaining an equivalent channel of each of the T ports in the nth frequency domain unit based on the precoded reference signal (Hao: [0157] In a first aspect, a method for wireless communication by a user equipment (UE) includes selecting one or more channel state information reference signals (CSI-RS) ports, of a plurality of CSI-RS ports, for the UE to report CSI, wherein the port selection includes selecting any of the plurality of CSI-RS ports to report the CSI or selecting CSI-RS ports based on a grouping of the plurality of CSI-RS ports, determining a precoding matrix indicator (PMI) formed by a linear combination of the one or more selected CSI-RS ports; computing at least wideband linear combination coefficients for the selected CSI-RS ports ... [0158] In a second aspect, alone or in combination with the first aspect, the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port.); and obtaining, based on the equivalent channel and an index of the M frequency domain bases, the linear superposition coefficient on the M frequency domain bases corresponding to each of the T ports (Hao: [0158] … the wideband linear combination coefficients are computed across all frequency domain (FD) units for each selected CSI-RS port.). Claims 4, 8, 13, and 17 are rejected under 35 U.S.C. 103 as being unpatentable over Hao-Liu in view of Li et.al. (US Patent Application Publication, 20190326974, hereinafter, “Li”). Regarding claims 4, 8, 13, and 17, Hao-Liu discloses on the features with respect to claims 1, 5, 10, and 14 as outlined above. Hao-Liu does not explicitly teach: receiving/sending the linear superposition coefficient in a port sequence before receiving/sending a frequency domain basis sequence. However, in the same field of endeavor, Li teaches: receiving/sending the linear superposition coefficients in a port sequence before receiving/sending a frequency domain basis sequence (Li: [0420] … or the receiving unit 620 is further configured to receive, before receiving the s first linear combination coefficient groups transmitted by the terminal device, fourth configuration information of each of the n port groups, transmitted by the terminal device; where the fourth configuration information is used to indicate at least one of a frequency domain granularity of phases and a frequency domain granularity of amplitudes of first linear combination coefficients of each port group ...). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao-Liu to include the features as taught by Li above in order to improve channel feedback precision. (Li, ¶ [0006]). Claims 9 and 18 are rejected under 35 U.S.C. 103 as being unpatentable over Hao-Liu in view of Hajri et.al. (US Patent Application Publication, 20230361842, hereinafter, “Hajri”). Regarding claims 9 and 18, Hao-Liu discloses on the features with respect to claims 5 and 14 as outlined above. Hao-Liu does not explicitly teach: sending the codebook to the network device, wherein the codebook comprises a port selection matrix W1, a frequency domain matrix Wf, and a linear superposition coefficient matrix W~2 , wherein a dimension corresponding to W1 is P*T, Wf comprises M columns selected from K columns in a discrete Fourier transform DFT matrix, and wherein W~2 is a matrix comprising T*M linear superposition coefficients. However, in the same field of endeavor, Hajri teaches: sending the codebook to the network device, wherein the codebook comprises a port selection matrix W1, a frequency domain matrix Wf, and a linear superposition coefficient matrix W~2 , wherein a dimension corresponding to W1 is P*T, Wf comprises M columns selected from K columns in a discrete Fourier transform DFT matrix, and wherein W~2 is a matrix comprising T*M linear superposition coefficients (Hajri: [0105] For example, in Rel.16 type II CSI, the UE may feedback to the gNB: Grid-of-beam matrix W1, FD basis subset Wf, and linear combination coefficients (LCC) {tilde over (W)}2. At the UE side, {tilde over (W)}2 can be computed as … {tilde over (W)}2=W2Wf … [0108] In type II port selection CB, compared with the Type II CB, the selected spatial beam matrix W1 is replaced with a port selection matrix indicating the selected ports. It has been agreed that the same DFT-based compression scheme in Rel.16 may be extended to the Type II port selection codebook. Thus, when feeding back, the UE may only need to feedback the indices of the selected port selection, instead of feeding back the indices of strongest beams from a fixed DFT based codebook … [0104] Where {tilde over (W)}2 is a 2L×M matrix of linear combining coefficients, Wf is an N3×M FD compression matrix (analogous to W1 in frequency domain), where M is the number of frequency domain (FD) components …). Therefore, it would have been obvious to one of ordinary skill in the art before the effective filing date of the claimed invention to modify the invention of Hao-Liu to include the features as taught by Hajri above in order to overhead. (Hajri, ¶ [0002-0005]). Conclusion Applicant's amendment necessitated the new ground(s) of rejection presented in this Office action. Accordingly, THIS ACTION IS MADE FINAL. See MPEP § 706.07(a). Applicant is reminded of the extension of time policy as set forth in 37 CFR 1.136(a). A shortened statutory period for reply to this final action is set to expire THREE MONTHS from the mailing date of this action. In the event a first reply is filed within TWO MONTHS of the mailing date of this final action and the advisory action is not mailed until after the end of the THREE-MONTH shortened statutory period, then the shortened statutory period will expire on the date the advisory action is mailed, and any extension fee pursuant to 37 CFR 1.136(a) will be calculated from the mailing date of the advisory action. In no event, however, will the statutory period for reply expire later than SIX MONTHS from the date of this final action. Any inquiry concerning this communication or earlier communications from the examiner should be directed to LIEM H NGUYEN whose telephone number is (408) 918-7636. The examiner can normally be reached on Monday-Friday, 8:00AM-4:30PM PT. If attempts to reach the examiner by telephone are unsuccessful, the examiner’s supervisor, Noel Beharry can be reached on (571) 270-5630. The fax phone number for the organization where this application or proceeding is assigned is 571-273-8300. Information regarding the status of an application may be obtained from the Patent Application Information Retrieval (PAIR) system. Status information for published applications may be obtained from either Private PAIR or Public PAIR. Status information for unpublished applications is available through Private PAIR only. For more information about the PAIR system, see http://pair-direct.uspto.gov. Should you have questions on access to the Private PAIR system, contact the Electronic Business Center (EBC) at 866-217-9197 (toll-free). If you would like assistance from a USPTO Customer Service Representative or access to the automated information system, call 800-786-9199 (IN USA OR CANADA) or 571-272-1000. /LIEM H. NGUYEN/Primary Examiner, Art Unit 2416
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Prosecution Timeline

Jan 23, 2023
Application Filed
Aug 21, 2025
Non-Final Rejection mailed — §103
Oct 23, 2025
Response Filed
Jun 01, 2026
Final Rejection mailed — §103 (current)

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3-4
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95%
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