Prosecution Insights
Last updated: April 19, 2026
Application No. 18/493,411

SYCHRONIZATION METHOD AND APPARATUS FOR WIRELESS TRANSMISSION BETWEEN TERMINAL AND MULTIPLE TRANSMISSION AND RECEPTION POINTS IN WIRELESS COMMUNICATION SYSTEM

Non-Final OA §103
Filed
Oct 24, 2023
Examiner
CHENG, CHI TANG P
Art Unit
2463
Tech Center
2400 — Computer Networks
Assignee
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
OA Round
1 (Non-Final)
80%
Grant Probability
Favorable
1-2
OA Rounds
3y 2m
To Grant
99%
With Interview

Examiner Intelligence

Grants 80% — above average
80%
Career Allow Rate
466 granted / 579 resolved
+22.5% vs TC avg
Strong +25% interview lift
Without
With
+25.4%
Interview Lift
resolved cases with interview
Typical timeline
3y 2m
Avg Prosecution
25 currently pending
Career history
604
Total Applications
across all art units

Statute-Specific Performance

§101
9.1%
-30.9% vs TC avg
§103
49.8%
+9.8% vs TC avg
§102
14.1%
-25.9% vs TC avg
§112
18.6%
-21.4% vs TC avg
Black line = Tech Center average estimate • Based on career data from 579 resolved cases

Office Action

§103
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 § 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. Claim(s) 1 is/are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Publication No. 2024/0171997 A1 to Du et al., in view of U.S. Patent Publication No. 2025/0358863 A1 to Cao et al. As to claim 1, Du discloses A method of a user equipment (UE), comprising: receiving a first synchronization signal block (SSB) search request message including SSB search options through a base station (BS) (paragraph 67: configuration information which may indicate a measurement configuration); searching for a plurality of SSBs based on the SSB search options (paragraph 75-77); in response to a condition as a result of the searching, transmitting a first SSB search result report message to the BS, the first SSB search result report message including information on the at least one SSB (paragraphs 69-77: “first device 110-1 can transmit 2030 the beam information of the second cell 140 to the device 120-1 on the first cell 130 on the resource”, where “the beam information can comprise at least an index of SSB of the beam which has the best quality”); receiving a first physical downlink control channel (PDCCH) order including an SSB index (paragraph 78). Du does not appear to explicitly disclose “through a first transmission and reception point (TRP) connected to a base station (BS)”; in response to presence of a beam transmitting at least one SSB having a received signal strength equal to or greater than a predetermined threshold as a result of the searching; receiving a first physical downlink control channel (PDCCH) order including a preamble index from the first TRP; performing a random access procedure with a second TRP transmitting a beam corresponding to the SSB index included in the first PDCCH order. Cao discloses “through a first transmission and reception point (TRP) connected to a base station (BS)” (Fig. 4, 7A and 7B); in response to presence of a beam (see, e.g., paragraph 72, disclosing beam used for transmission; Figs. 7A/B and 10) transmitting at least one SSB having a received signal strength equal to or greater than a predetermined threshold as a result of the searching (paragraph 84); receiving a first physical downlink control channel (PDCCH) order including a preamble index from the first TRP (paragraph 72; Figs. 7A/B, 10: communication through first TRP; paragraph 130); performing a random access procedure with a second TRP transmitting a beam corresponding to the SSB index included in the first PDCCH order. (paragraphs 72, 120, 124,125,130-133,135,139-144: random access procedure to the target TRP) Before the effective filing date, it would have been obvious to a person of ordinary skill in the art to combine Du’s teachings discussed above with Cao’s teachings discussed above, to reject this claim. IN particular, Du’s teaching of “receiving a first synchronization signal block (SSB) search request message including SSB search options through a base station (BS)” may be modified/combined with Cao’s teaching of “through a first transmission and reception point (TRP) connected to a base station (BS)” to reject “receiving a first synchronization signal block (SSB) search request message including SSB search options through a first transmission and reception point (TRP) connected to a base station (BS)” since it would have been obvious to a phosita to perform Du’s step of receiving through Cao’s trp. Du’s teaching of “in response to a condition as a result of the searching, transmitting a first SSB search result report message to the BS, the first SSB search result report message including information on the at least one SSB” and Cao’s teachings of “in response to presence of a beam transmitting at least one SSB having a received signal strength equal to or greater than a predetermined threshold as a result of the searching” and “through a first trp connected to the base station”, to reject “in response to presence of a beam transmitting at least one SSB having a received signal strength equal to or greater than a predetermined threshold as a result of the searching, transmitting a first SSB search result report message to the BS through the first TRP, the first SSB search result report message including information on the at least one SSB having the received signal strength equal to or greater than the predetermined threshold”, since it would have been obvious that the condition in Du’s teaching may be embodied by the Cao’s disclosed condition of the presence of a beam transmitting at least one SSB having a received signal strength equal to or greater than a predetermined threshold as a result of the searching, and SSB reported on in Du is the SSB in Cao having a large enough signal strength, and that the transmitting in Du may be performed through the first trp disclosed in Cao. To a phosita, Du’s teaching of “receiving a first physical downlink control channel (PDCCH) order including an SSB index” and Cao’s teaching of “receiving a first physical downlink control channel (PDCCH) order including a preamble index from the first TRP” are clearly combinable to reject “receiving a first physical downlink control channel (PDCCH) order including an SSB index and a preamble index from the first TRP” because both teachings pertain to PDCCH orders. The cited references are directed to control signaling in wireless communication infrastructures. The suggestion/motivation would have been to improve resource allocation and signaling for wireless communications (Cao, paragraphs 1-9; Du, paragraphs 1-16). Furthermore, note that with regard to the claimed invention, especially the limitation above, all of the claimed elements have been shown to be known in the cited art, and one skilled in the art could have combined the elements as claimed by known methods with no change in their respective functions and the combination would have yielded predictable results to one of ordinary skill in the art as of and before the effective filing date. Claim(s) 16,20 is/are rejected under 35 U.S.C. 103 as being unpatentable over U.S. Patent Publication No. 2022/0330192 A1 to Zhang et al., in view of U.S. patent publication No. 2025/0358863 A1 to Cao et al. As to claim 16, Zhang discloses A method of a user equipment (UE), comprising:receiving a message including information on timing advance group(s) (TAG(s)) through a first transmission and reception point (TRP) connected to a base station (BS). (paragraphs 68-70,85: UE receiving TA information that includes TA indication that includes info on TAG; Fig. 1, paragraphs 3, 24-25, TRP connected to a BS). Zhang does not appear to explicitly disclose receiving a physical downlink control channel (PDCCH) order including a preamble index for accessing a second TRP from the first TRP; and performing a random access procedure with the second TRP based on the PDCCH order. Cao discloses receiving a physical downlink control channel (PDCCH) order including a preamble index for accessing a second TRP from the first TRP; and performing a random access procedure with the second TRP based on the PDCCH order. (paragraphs 72, 120, 124,125,130-133,135,139-144: random access procedure to the target TRP) Before the effective filing date, it would have been obvious to a person of ordinary skill in the art to combine Zhang’s teachings discussed above with Cao’s teachings discussed above, to reject this claim. The cited references are directed to control signaling in wireless communication infrastructures. The suggestion/motivation would have been to improve resource allocation and signaling for wireless communications (Cao, paragraphs 1-9; Zhang, paragraphs 1-10). Furthermore, note that with regard to the claimed invention, especially the limitation above, all of the claimed elements have been shown to be known in the cited art, and one skilled in the art could have combined the elements as claimed by known methods with no change in their respective functions and the combination would have yielded predictable results to one of ordinary skill in the art as of and before the effective filing date. As to claim 20, Zhang and Cao teach the method as in the parent claim 16. Zhang discloses include a TAG identifier based on the information on the TAG(s). (paragraphs 68-70,85: UE receiving TA information that includes TA indication that includes info on TAG) Zhang does not explicitly disclose wherein the PDCCH order further include certain data. Cao discloses wherein the PDCCH order further include certain data (paragraph 130) Before the effective filing date, it would have been obvious to a person of ordinary skill in the art to combine Zhang’s teachings discussed above with Cao’s teachings discussed above, to reject this claim, by recognizing that the PDCCH order disclosed in Cao may include the TAG identifier disclosed in Zhang. The cited references are directed to control signaling in wireless communication infrastructures. The suggestion/motivation would have been to improve resource allocation and signaling for wireless communications (Cao, paragraphs 1-9; Zhang, paragraphs 1-10). Furthermore, note that with regard to the claimed invention, especially the limitation above, all of the claimed elements have been shown to be known in the cited art, and one skilled in the art could have combined the elements as claimed by known methods with no change in their respective functions and the combination would have yielded predictable results to one of ordinary skill in the art as of and before the effective filing date. Allowable Subject Matter Claims 2-7, 17-19 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 Any inquiry concerning this communication or earlier communications from the examiner should be directed to CHI TANG P CHENG whose telephone number is (571)272-9021. The examiner can normally be reached M-F, 9:30AM - 6PM. 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, Asad M Nawaz can be reached at (571)272-3988. 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. /CHI TANG P CHENG/Primary Examiner, Art Unit 2463
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Prosecution Timeline

Oct 24, 2023
Application Filed
Mar 19, 2026
Non-Final Rejection — §103 (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
80%
Grant Probability
99%
With Interview (+25.4%)
3y 2m
Median Time to Grant
Low
PTA Risk
Based on 579 resolved cases by this examiner. Grant probability derived from career allow rate.

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