Prosecution Insights
Last updated: October 02, 2026
Application No. 19/013,758

RANGING METHOD AND APPARATUS

Non-Final OA §102
Filed
Jan 08, 2025
Priority
Jul 08, 2022 — CN 202210798144.0 +2 more
Examiner
HO, HUY C
Art Unit
Tech Center
Assignee
Huawei Technologies Co., Ltd.
OA Round
1 (Non-Final)
78%
Grant Probability
Favorable
1-2
OA Rounds
1y 5m
Est. Remaining
98%
With Interview

Examiner Intelligence

Grants 78% — above average
78%
Career Allowance Rate
623 granted / 804 resolved
+17.5% vs TC avg
Strong +20% interview lift
Without
With
+20.5%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
24 currently pending
Career history
826
Total Applications
across all art units

Statute-Specific Performance

§101
5.9%
-34.1% vs TC avg
§103
54.8%
+14.8% vs TC avg
§102
31.2%
-8.8% vs TC avg
§112
2.6%
-37.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 804 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 . Preliminary Amendment Acknowledgement The Preliminary Amendment filed on 05/07/2025 has been acknowledged and considered by the examiner. 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 – (a)(2) the claimed invention was described in a patent issued under section 151, or in an application for patent published or deemed published under section 122(b), in which the patent or application, as the case may be, names another inventor and was effectively filed before the effective filing date of the claimed invention. Claim(s) 1-20 is/are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Hammerschmidt et al. (Pub. No. US 2022/0137177). Regarding claim 1. Hammerschmidt teaches a ranging method, applied to a first communication apparatus comprising a first ultra-wideband system and a first narrowband system (Hammerschmidt, the Abstract), the method comprising: receiving, by the first ultra-wideband system, ranging configuration information from the first narrowband system, wherein the ranging configuration information is determined by the first narrowband system and a second narrowband system of a second communication apparatus through negotiation (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]: transmitting/receiving packets conveying synchronization information or ranging information via a narrowband between a first and a second devices); and generating, by the first ultra-wideband system, a first ranging frame based on the ranging configuration information, wherein the first ranging frame is used to measure a distance between the first communication apparatus and the second communication apparatus (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]: transmitting/receiving fragments/packets via an ultra-wideband for determining range or distance between the two devices). Regarding claim 11. Hammerschmidt teaches a communication apparatus, comprising a first ultra-wideband system and a first narrowband system, and wherein the first ultra-wideband system comprises a first transceiver and a first processor (Hammerschmidt, the Abstract), wherein the first transceiver is configured to receive ranging configuration information from the first narrowband system, wherein the ranging configuration information is determined by the first narrowband system and a second narrowband system of a second communication apparatus through negotiation (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]: transmitting/receiving packets conveying synchronization information or ranging information via a narrowband between a first and a second devices); and the first processor is configured to generate a first ranging frame based on the ranging configuration information, wherein the first ranging frame is used to measure a distance between the communication apparatus and the second communication apparatus (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]: transmitting/receiving fragments/packets via an ultra-wideband for determining range or distance between the two devices). Regarding claim 2. Hammerschmidt teaches the method according to claim 1, wherein the ranging configuration information comprises a ranging key and a ranging parameter (Hammerschmidt, Figs. 43 and 44, pp [210]-[211]: ranging information, session parameters). Regarding claim 3. Hammerschmidt teaches the method according to claim 2, wherein the ranging key comprises a session key (Hammerschmidt, Figs. 43 and 44, pp [210]-[211]: ranging information, session parameters). Regarding claim 4. Hammerschmidt teaches the method according to claim 1, wherein the generating, by the first ultra-wideband system, the first ranging frame based on the ranging configuration information comprises: generating, by the first ultra-wideband system, a ranging sequence based on the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); and generating, by the first ultra-wideband system, the first ranging frame based on the ranging sequence and a preamble code (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 5. Hammerschmidt teaches the method according to claim 4, wherein the generating, by the first ultra- wideband system, the ranging sequence based on the ranging key and the ranging parameter comprises: generating, by the first ultra-wideband system, a ranging sequence value and a ranging sequence key based on the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); and generating, by the first ultra-wideband system, the ranging sequence based on the ranging sequence value and the ranging sequence key (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 6. Hammerschmidt teaches the method according to claim 5, wherein the generating, by the first ultra-wideband system, the ranging sequence value and the ranging sequence key based on the ranging key and the ranging parameter comprises: generating, by the first ultra-wideband system, the ranging sequence key based on the ranging key and first information, wherein the first information comprises a ranging sequence text, the ranging sequence text is determined based on the ranging key and second information, and the second information is determined based on the ranging parameter (Hammerschmidt, pp [207], [210]-[212]); generating, by the first ultra-wideband system, the ranging sequence value based on the ranging key and third information, wherein the third information comprises the ranging sequence text (Hammerschmidt, pp [207], [210]-[212]); and generating, by the first ultra-wideband system, the ranging sequence based on the ranging sequence key and the ranging sequence value (Hammerschmidt, pp [207], [210]-[212]). Regarding claim 7. Hammerschmidt teaches the method according to claim 1, further comprising: sending, by the first ultra-wideband system, the first ranging frame to a second ultra-wideband system of the second communication apparatus (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]); and receiving, by the first ultra-wideband system, a second ranging frame from the second ultra-wideband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 8. Hammerschmidt teaches the method according to claim 7, further comprising: determining, by the first ultra-wideband system, a measurement result of the second ranging frame (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]); and sending, by the first ultra-wideband system, the measurement result of the second ranging frame to the first narrowband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 9. Hammerschmidt teaches the method according to claim 8, further comprising: sending, by the first narrowband system, the measurement result of the second ranging frame to the second narrowband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 10. Hammerschmidt teaches the method according to claim 9, wherein before the receiving, by the first ultra-wideband system, the ranging configuration information from the first narrowband system, the method further comprises: sending, by the first narrowband system, fourth information to the second narrowband system, wherein the fourth information comprises the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); or the fourth information comprises information used to generate the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 12. Hammerschmidt teaches the apparatus according to claim 11, wherein the ranging configuration information comprises a ranging key and a ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 13. Hammerschmidt teaches the apparatus according to claim 12, wherein the ranging key comprises a session key (Hammerschmidt, Figs. 43 and 44, pp [210]-[211]: ranging information, session parameters). Regarding claim 14. Hammerschmidt teaches the apparatus according to claim 11, wherein the first processor is configured to generate a ranging sequence based on the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); and generate the first ranging frame based on the ranging sequence and a preamble code (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 15. Hammerschmidt teaches the apparatus according to claim 14, wherein the first processor is configured to generate a ranging sequence value and a ranging sequence key based on the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); and generate the ranging sequence based on the ranging sequence value and the ranging sequence key (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Regarding claim 16. Hammerschmidt teaches the apparatus according to claim 15, wherein the first processor is configured to generate the ranging sequence key based on the ranging key and first information, wherein the first information comprises a ranging sequence text, the ranging sequence text is determined based on the ranging key and the first information, and the second information is determined based on the ranging parameter (Hammerschmidt, pp [207], [210]-[212]); the first processor is further configured to generate the ranging sequence value based on the ranging key and third information, wherein the third information comprises the ranging sequence text (Hammerschmidt, pp [207], [210]-[212]); and the first processor is further configured to generate the ranging sequence based on the ranging sequence key and the ranging sequence value (Hammerschmidt, pp [207], [210]-[212]). Regarding claim 17. Hammerschmidt teaches the apparatus according to claim 11, wherein the first transceiver is further configured to send the first ranging frame to a second ultra-wideband system of the second communication apparatus (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]); and receive a second ranging frame from the second ultra-wideband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 18. Hammerschmidt teaches the apparatus according to claim 17, wherein the first processing is further configured to determine a measurement result of the second ranging frame (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]); and send the measurement result of the second ranging frame to the first narrowband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 19. Hammerschmidt teaches the apparatus according to claim 18, wherein the first narrowband system comprises a second transceiver, wherein the second transceiver is configured to send the measurement result of the second ranging frame to the second narrowband system (Hammerschmidt, Fig. 14, pp [102]; Fig. 31, pp [169]-[175]). Regarding claim 20. Hammerschmidt teaches the apparatus according to claim 11, wherein the second transceiver is further configured to send fourth information to the second narrowband system, wherein the fourth information comprises the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]); or the fourth information comprises information used to generate the ranging key and the ranging parameter (Hammerschmidt, Figs. 20 and 21, pp [133]-[134]). Relevant references to the claims but not used in the rejection above Lee et al. (Pub. No. US 2021/0136556), teaches an electronic device for performing ranging using a ultra-wide band (UWB) communication method and an operation method of the electronic device. An operation method of a first electronic device includes transmitting a connection start message related to a second communication method to a second electronic device by using a first communication method, transmitting an initial connection message by using the second communication method, receiving a ranging start message from the second electronic device, and performing ranging with respect to the second electronic device by using the second communication method. Sierra et al. (Pub. No. US 2020/0336303), teaches method and system for enabling the generation of cryptographic material for ranging operations in a manner that reduces and obfuscates potential correlations between leaked and secret information. The system includes a ranging module having one or more ranging sensors. The ranging module is coupled to a secure processing system through a hardware interface to receive at least one encrypted ranging session key, the ranging module to decrypt the at least one encrypted ranging session key to generate a ranging session key, generate a sparse ranging input, derive a message session key based on the ranging session key, and derive a derived ranging key via a key derivation cascade applied to the message session key and the sparse ranging input, the derived ranging key to encrypt data transmitted during a ranging session. Conclusion Any inquiry concerning this communication or earlier communications from the examiner should be directed to HUY C HO whose telephone number is (571)270-1108. The examiner can normally be reached M-F 8AM-5PM. 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, KATHY WANG-HURST can be reached at (571)270-5371. 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. /HUY C HO/Primary Examiner, Art Unit 2644
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Prosecution Timeline

Jan 08, 2025
Application Filed
May 07, 2025
Response after Non-Final Action
Sep 22, 2026
Non-Final Rejection mailed — §102 (current)

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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
78%
Grant Probability
98%
With Interview (+20.5%)
3y 1m (~1y 5m remaining)
Median Time to Grant
Low
PTA Risk
Based on 804 resolved cases by this examiner. Grant probability derived from career allowance rate.

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