Prosecution Insights
Last updated: August 18, 2026
Application No. 18/605,536

CYCLIC PREFIX FOR FORWARD LINK WAVEFORM

Final Rejection §103
Filed
Mar 14, 2024
Examiner
JAVAID, JAMAL
Art Unit
2412
Tech Center
2400 — Computer Networks
Assignee
Qualcomm Incorporated
OA Round
2 (Final)
88%
Grant Probability
Favorable
3-4
OA Rounds
2m
Est. Remaining
94%
With Interview

Examiner Intelligence

Grants 88% — above average
88%
Career Allowance Rate
870 granted / 983 resolved
+30.5% vs TC avg
Moderate +6% lift
Without
With
+5.8%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
37 currently pending
Career history
1024
Total Applications
across all art units

Statute-Specific Performance

§101
7.6%
-32.4% vs TC avg
§103
61.3%
+21.3% vs TC avg
§102
11.9%
-28.1% vs TC avg
§112
13.5%
-26.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 983 resolved cases

Office Action

§103
DETAILED ACTION Status of Case The present application, filed on or after March 16, 2013, is being examined under the first inventor to file provisions of the AIA . This Office Action is in response to the claims filed on 3/14/2024. Claims 1-20 are pending. Response to Arguments Applicant’s arguments filed on 6/3/2026 with respect to the pending claims have been considered but are moot because the arguments do not apply to any of the references being used in the current rejection. Claim Rejections - 35 USC § 103 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, 4-5, 8-10, 12-13, 15-18, and 20 are rejected under 35 U.S.C. 103 as being unpatentable over Wang (WO 2021/028553 A1) in view of Cheng (USPAN 2024/0114454) and Hammond (USPAN 2020/0036487). Consider claims 1 and 17, Wang discloses an apparatus for wireless communication at a device, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories, at least one processor of the one or more processors configured to cause the ambient IoT device to (see figures 8 and 9, wherein disclosed is devices comprising a processor coupled to a memory), and a corresponding method (see paragraph 103, wherein disclosed is said method; also, see figure 10, reproduced below for convenience) to: receive an indication that a cyclic prefix (CP) is to be included in a waveform; and decode the waveform in accordance with the indication that the CP is to be included in the waveform (see paragraph 103: the first set of parameters may include “at least one of a cyclic prefix, CP, extension indicator indicating whether the UE is expected to perform CP extension”). PNG media_image1.png 706 472 media_image1.png Greyscale Although Wang discloses a device (see above), Wang does not specifically disclose that the device is an ambient internet of things (IoT) device or that the waveform is a forward link waveform. Cheng discloses a device that is an ambient internet of things (IoT) device (see paragraphs 12 and 28 and 37, 43, 45, and 51: waveform shaping scheme in an IoT network comprising IoT devices), and that the waveform is a forward link waveform (see paragraph 9: OOK waveform, which is a forward link waveform). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Although Wang in view of Cheng disclose to decide the forward link waveform to cause the IoT device to perform operations (see above), Wang in view of Cheng do not disclose to skip detection of at least part of the CP. Hammond discloses to skip detection of at least part of a cyclic prefix (CP) (see paragraph 45: in the interest of power, the cyclic prefix may be skipped). 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 Wang and combine it with the noted teachings of Hammond. The motivation to combine these references is to provide a more efficient method of processing that saves power, as well as providing a method of including simultaneous use of a spectrum by multiple simultaneous users (see paragraph 3 of Hammond) Consider claims 2, 10, and 18, Wang does not specifically disclose that the forward link waveform is an on-off keying (OOK) waveform. Cheng discloses that the forward link waveform is an on-off keying (OOK) waveform (see paragraph 9: OOK waveform, which is a forward link waveform). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Consider claims 4, 12, and 20, although Wang discloses the indication that the CP is to be included in the waveform, Wang does not specifically disclose that the waveform comprises a forward link waveform that comprises at least one of a system information block (SIB) or a synchronization signal. Cheng discloses that the waveform is a forward link waveform (see paragraph 9: OOK waveform, which is a forward link waveform) and it comprises at least one of a system information block (SIB) or a synchronization signal (see paragraph 56: the CP information may be configured to the UE through the RRC or SIB). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Consider claim 5, although Wang discloses receiving the waveform including the CP (see paragraph 103: when the indicator indicates that the UE is expected to perform the CP extension), Wang does not specifically disclose that the indication that the CP is to be included in the forward link waveform comprises the SIB. Cheng discloses that the indication that the CP is to be included in the forward link waveform comprises the SIB (see paragraph 56: the CP information may be configured to the UE through the RRC or SIB). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Consider claims 8 and 15, Wang discloses that the indication that the CP is to be included in the forward link waveform comprises a control signal associated with the waveform (see(see paragraph 103, wherein the indicator can be taken to be a control signal associated with the waveform). Wang does not specifically disclose that the waveform is a forward link waveform. Cheng discloses that the waveform is a forward link waveform (see paragraph 9: OOK waveform, which is a forward link waveform). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Consider claim 9, Wang discloses an apparatus for wireless communication at a wireless communication device, comprising: one or more memories storing processor-executable code; and one or more processors coupled with the one or more memories, at least one processor of the one or more processors configured to cause the wireless communication device (see figures 8 and 9, wherein disclosed is devices comprising a processor coupled to a memory) to: transmit an indication that a cyclic prefix (CP) is to be included in a waveform associated with a device; and transmit the waveform in accordance with the indication that the CP is to be included in the waveform (see paragraph 103: the first set of parameters may include “at least one of a cyclic prefix, CP, extension indicator indicating whether the UE is expected to perform CP extension”). PNG media_image1.png 706 472 media_image1.png Greyscale Although Wang discloses a device (see above), Wang does not specifically disclose that the device is an ambient internet of things (IoT) device or that the waveform is a forward link waveform. Cheng discloses a device that is an ambient internet of things (IoT) device (see paragraphs 12 and 28 and 37, 43, 45, and 51: waveform shaping scheme in an IoT network comprising IoT devices), and that the waveform is a forward link waveform (see paragraph 9: OOK waveform, which is a forward link waveform). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Although Wang in view of Cheng disclose to decide the forward link waveform to cause the IoT device to perform operations (see above), Wang in view of Cheng do not disclose to skip detection of at least part of the CP. Hammond discloses to skip detection of at least part of a cyclic prefix (CP) (see paragraph 45: in the interest of power, the cyclic prefix may be skipped). 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 Wang and combine it with the noted teachings of Hammond. The motivation to combine these references is to provide a more efficient method of processing that saves power, as well as providing a method of including simultaneous use of a spectrum by multiple simultaneous users (see paragraph 3 of Hammond). Consider claim 13, although Wang discloses receiving the waveform including the CP (see paragraph 103: when the indicator indicates that the UE is expected to perform the CP extension), Wang does not specifically disclose that the indication that the CP is to be included in the forward link waveform comprises the SIB. Cheng discloses that the indication that the CP is to be included in the forward link waveform comprises the SIB (see paragraph 56: the CP information may be configured to the UE through the RRC or SIB). 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 Wang and combine it with the noted teachings of Cheng. The motivation to combine these references is to provide a method relating to low power wake-up signal (LP-WUS) design (see paragraph 2 of Cheng). Consider claim 16, Wang discloses that the wireless communication device is a user equipment (UE) or a network node (see figures 8 and 9, wherein disclosed is a UE and a RAN device). Allowable Subject Matter Claims 3, 6, 7, 11, 14, and 19 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. 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 Jamal Javaid whose telephone number is 571-270-5137 and email address is Jamal.Javaid@uspto.gov. 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, Charles Jiang, can be reached on 571-270-7191. 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). /JAMAL JAVAID/ Primary Examiner, Art Unit 2412 JAMAL JAVAID Primary Examiner Art Unit 2412
Read full office action

Prosecution Timeline

Show 2 earlier events
May 12, 2026
Interview Requested
May 18, 2026
Applicant Interview (Telephonic)
May 18, 2026
Examiner Interview Summary
Jun 03, 2026
Response Filed
Jul 02, 2026
Final Rejection mailed — §103
Aug 03, 2026
Interview Requested
Aug 10, 2026
Applicant Interview (Telephonic)
Aug 10, 2026
Examiner Interview Summary

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Study what changed to get past this examiner. Based on 5 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
88%
Grant Probability
94%
With Interview (+5.8%)
2y 7m (~2m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 983 resolved cases by this examiner. Grant probability derived from career allowance rate.

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