Prosecution Insights
Last updated: July 17, 2026
Application No. 18/012,044

CORE NETWORK NODE FOR SESSION MANAGEMENT, CORE NETWORK NODE FOR MOBILITY MANAGEMENT, AND METHOD THEREFOR

Non-Final OA §103
Filed
Dec 21, 2022
Priority
Oct 16, 2020 — JP 2020-174588 +1 more
Examiner
IM, THEODORE
Art Unit
2413
Tech Center
2400 — Computer Networks
Assignee
NEC Corporation
OA Round
3 (Non-Final)
64%
Grant Probability
Moderate
3-4
OA Rounds
0m
Est. Remaining
82%
With Interview

Examiner Intelligence

Grants 64% of resolved cases
64%
Career Allowance Rate
7 granted / 11 resolved
+5.6% vs TC avg
Strong +18% interview lift
Without
With
+17.9%
Interview Lift
resolved cases with interview
Typical timeline
3y 1m
Avg Prosecution
31 currently pending
Career history
55
Total Applications
across all art units

Statute-Specific Performance

§103
93.6%
+53.6% vs TC avg
§102
6.4%
-33.6% vs TC avg
Black line = Tech Center average estimate • Based on career data from 11 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 . Continued Examination Under 37 CFR 1.114 A request for continued examination under 37 CFR 1.114, including the fee set forth in 37 CFR 1.17(e), was filed in this application after final rejection. Since this application is eligible for continued examination under 37 CFR 1.114, and the fee set forth in 37 CFR 1.17(e) has been timely paid, the finality of the previous Office action has been withdrawn pursuant to 37 CFR 1.114. Applicant's submission filed on 03/02/2026 has been entered. Information Disclosure Statement The information disclosure statement (IDS) submitted on 03/06/2026 has been placed in the record and considered by the examiner. Response to Arguments Applicant’s arguments with respect to claims 33-50 have been considered but are moot in view of new grounds of 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. This application currently names joint inventors. In considering patentability of the claims the examiner presumes that the subject matter of the various claims was commonly owned as of the effective filing date of the claimed invention(s) absent any evidence to the contrary. Applicant is advised of the obligation under 37 CFR 1.56 to point out the inventor and effective filing dates of each claim that was not commonly owned as of the effective filing date of the later invention in order for the examiner to consider the applicability of 35 U.S.C. 102(b)(2)(C) for any potential 35 U.S.C. 102(a)(2) prior art against the later invention. Claims 33-50 are rejected under 35 U.S.C. 103 as being unpatentable over ESTEVEZ et al. (US 2021/0105656 A1; hereinafter "ESTEVEZ"), in view of Karampatsis et al. (US 2020/0351409 A1; hereinafter "Karampatsis"). Regarding claim 33, ESTEVEZ teaches a first core network node (FIG. 3 NSSF) comprising: at least one memory ([0057]); and at least one processor ([0225]) coupled to the at least one memory and configured to: transmit, to a second core network node (FIG. 3 AMF), at least one Single-Network Slice Selection Assistance Information (S-NSSAI) to be subscribed (FIG. 3; [0241] discloses that the first network entity may be an AMF entity, and that a subscription request message (e.g., Namf_EventExposure_Subsribe Request) comprises indications of S-NSSAI as event filters, thereby transmitting, to a second core network node, at least one S-NSSAI to be subscribed); receive, from the second core network node, a first message (FIG. 4 Namf_EventExposure_Notify) for modifying or releasing a Protocol Data Unit (PDU) session of a user equipment (UE) ([0241] discloses that a Namf_EventExposure_Notify message indicating that a UE has been newly allocated to an NSI is transmitted from the AMF to the NSSF, [0219] disclose that NSSF and/or AMF decide new NSI for the PDU session of the UE based on received analytics, thereby disclosing receiving, from the second core network node, a first message for modifying a PDU session of a UE) in a case where the UE moves to an area which is not an area of a list of tracking areas associated with the at least one S-NSSAI ([0175], [0188] disclose a UE moving in or out of an Area of Interest, [0185] discloses that the Area of Interest may comprise a set of TAIs, and [0174] discloses that S-NSSAI may be used as an event filer for the Area of Interest, thereby disclosing that the UE moves to an area which is not an area of a list of tracking areas associated with the at least one S-NSSAI). However, ESTEVEZ does not teach deactivate a session established regarding the UE; and send, to the second core network node, a second message in response to the first message, in a case where release of the established session has been triggered. In an analogous art, Karampatsis teaches deactivate a session established regarding the UE ([0096] if the SMF 604 is informed from the AMF 602 that the has left an area of interest, the SMF 604 decides 620 to deactivate a user plane traffic of the PDU session that has a PDU session restriction policy); and send, to the second core network node (FIG. 7 AMF 706), a second message ([0100] the AMF 706 and the SMF 708 includes a Namf_Communication_N1N2MessageTransfer message) in response to the first message ([0095] the AMF transmits a notification message to the SMF, [0100] transfer of release and/or deactivation indication information), in a case where release of the established session has been triggered ([0088] discloses that the AMF notification causes the SMF to release the PDU session, [0100] discloses an N2 PDU session resource release command message, [0101] discloses that UE detects release and/or deactivation indication). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 34, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the session is established for the UE, which is associated with at least one S-NSSAI ([0052] the route selection descriptors may contain parameters such as S-NSSAI, DNN, and so forth that the UE uses to establish or reuse a relevant PDU session, In table 2, Network Slice Selection: either a single value or a list of values of S-NSSAI(s)). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 35, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the first message (FIG. 4 Namf_Event_Exposure_Notify (SUPI)) comprises an identifier of the UE ([0241] discloses that a message (e.g., Namf_EventExposure_Notify) indicating that a UE has been newly allocated to an NSI may comprise one or more NSI IDs and/or one or more SUPIs corresponding to the NSI IDs, thereby disclosing that the first message comprises an identifier of the UE). Regarding claim 36, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the area comprises a tracking area or a cell ([0185] discloses that an Area of Interest may comprise a set of TAIs, thereby disclosing that the area comprises a tracking area). Regarding claim 37, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the session comprises a Protocol Data Unit (PDU) session ([0037] a network unit 104 may determine validity information for a protocol data unit session). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 38, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the first message indicates a NamfEventExposure Service ([0241] discloses a message (e.g., Namf_EventExposure_Notify), thereby disclosing that the first message indicates a Namf_EventExposure service). Regarding claim 39, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the second message ([0100] Namf_Communication_N1N2MessageTransfer message) comprises a PDU Session Release Command ([0100] In FIG. 7 communication 716, the AMF and SMF 708 includes a Namf_Communication_N1N2MessageTransfer message, and communication 718 discloses that the AMF 706 transmits an N2 PDU session resource release command message to the NG-RAN 704). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 40, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the first core network node (FIG. 6 SMF 604) is configured to perform session management ([0089] communications 600 for a session management function subscribing from an access and mobility management function to be notified). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 41, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the second core network node (FIG. 3 AMF) is configured to perform mobility management ([0241] discloses that the first network entity may be an Access and Mobility Management Function (AMF) entity, thereby disclosing that the second core network node is configured to perform mobility management). Regarding claim 42, ESTEVEZ teaches a method (FIG. 3) for a first core network node (FIG. 3 NSSF) comprising: transmitting, to a second core network node (FIG. 3 AMF), at least one Single-Network Slice Selection Assistance Information (S-NSSAI) to be subscribed (FIG. 3; [0241] discloses that the first network entity may be an AMF entity, and that a subscription request message (e.g., Namf_EventExposure_Subsribe Request) may comprises indications of S-NSSAI as event filters, thereby transmitting, to a second core network node, at least one S-NSSAI to be subscribed); receiving, from the second core network node, a first message (FIG. 4 Namf_EventExposure_Notify) for modifying or releasing a Protocol Data Unit (PDU) session of a user equipment (UE) ([0241] discloses that a Namf_EventExposure_Notify message indicating that a UE has been newly allocated to an NSI is transmitted from the AMF to the NSSF, [0219] disclose that NSSF and/or AMF decide new NSI for the PDU session of the UE based on received analytics, thereby disclosing receiving, from the second core network node, a first message for modifying a PDU session of a UE) in a case where the UE moves to an area which is not an area of a list of tracking areas associated with the at least one S-NSSAI ([0175], [0188] disclose a UE moving in or out of an Area of Interest, [0185] discloses that the Area of Interest may comprise a set of TAIs, and [0174] discloses that S-NSSAI may be used as an event filer for the Area of Interest, thereby disclosing that the UE moves to an area which is not an area of a list of tracking areas associated with the at least one S-NSSAI). However, ESTEVEZ does not teach deactivating a session established regarding the UE; and sending, to the second core network node, a second message in response to the first, in a case where established session has been triggered. In an analogous art, Karampatsis teaches deactivating a session established regarding the UE ([0096] if the SMF 604 is informed from the AMF 602 that the has left an area of interest, the SMF 604 decides 620 to deactivate a user plane traffic of the PDU session that has a PDU session restriction policy); and sending, to the second core network node (FIG. 7 AMF 706), a second message ([0100] Namf_Communication_N1N2MessageTransfer message) in response to the first message ([0095] the AMF transmits a notification message to the SMF, [0100] transfer of release and/or deactivation indication information), in a case where established session has been triggered ([0088] discloses that the AMF notification causes the SMF to release the PDU session, [0100] discloses an N2 PDU session resource release command message, [0101] discloses that UE detects release and/or deactivation indication). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 43, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the session is established for the UE, which is associated with at least one S-NSSAI ([0052] the route selection descriptors may contain parameters such as S-NSSAI, DNN, and so forth that the UE uses to establish or reuse a relevant PDU session, In table 2, Network Slice Selection: either a single value or a list of values of S-NSSAI(s)). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 44, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the first message (FIG. 4 Namf_Event_Exposure_Notify (SUPI)) comprises an identifier of the UE ([0241] discloses that a message (e.g., Namf_EventExposure_Notify) indicating that a UE has been newly allocated to an NSI may comprise one or more NSI IDs and/or one or more SUPIs corresponding to the NSI IDs, thereby disclosing that the first message comprises an identifier of the UE). Regarding claim 45, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the area comprises a tracking area or a cell ([0185] discloses that an Area of Interest may comprise a set of TAIs, thereby disclosing that the area comprises a tracking area). Regarding claim 46, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the session comprises a Protocol Data Unit (PDU) session ([0037] a network unit 104 may determine validity information for a protocol data unit session). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 47, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the first message indicates a NamfEventExposure Service ([0241] discloses a message (e.g., Namf_EventExposure_Notify), thereby disclosing that the first message indicates a Namf_EventExposure service). Regarding claim 48, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the second message ([0100] Namf_Communication_N1N2MessageTransfer message) comprises a PDU Session Release Command ([0100] In FIG. 7 communication 716, the AMF and SMF 708 includes a Namf_Communication_N1N2MessageTransfer message, and communication 718 discloses that the AMF 706 transmits an N2 PDU session resource release command message to the NG-RAN 704). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 49, the combination of ESTEVEZ and Karampatsis, specifically Karampatsis teaches wherein the first core network node (FIG. 6 SMF 604) performs session management ([0089] communications 600 for a session management function subscribing from an access and mobility management function to be notified). 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 an PDU session as taught by Karampatsis within the system of ESTEVEZ. One would have been motivated to so in order to improve enforcement of background data transfer conditions, thereby benefiting network operation and resource management (Karampatsis [0051]). Regarding claim 50, the combination of ESTEVEZ and Karampatsis, specifically ESTEVEZ teaches wherein the second core network node (FIG. 3 AMF) performs mobility management ([0241] discloses that the first network entity may be an Access and Mobility Management Function (AMF) entity, thereby disclosing that the second core network node is configured to perform mobility management). Conclusion The following prior art made of record and not relied upon is considered pertinent to applicant's disclosure: US 2021/0360371 A1 (Qiao et al.) discloses a gateway mobile location center (GMLC) receives, from a location services (LCS) client, a request for a capability of a positioning service level for a wireless device. US 2022/0286895 A1 (LEE et al.) discloses a method and device for controlling the rate of data transmitted/received by a terminal in a wireless communication system. US 2022/0386229 A1 (SUN et al.) discloses a success rate of accessing a slice can be improved, so that user experience is improved. Any inquiry concerning this communication or earlier communications from the examiner should be directed to THEODORE IM whose telephone number is (571)270-1955. The examiner can normally be reached M-F 9AM-5PM ET. 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, UN C CHO can be reached on 571-272-7919. 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. /T.I./ Examiner, Art Unit 2413 /UN C CHO/ Supervisory Patent Examiner, Art Unit 2413
Read full office action

Prosecution Timeline

Show 3 earlier events
Dec 05, 2024
Response after Non-Final Action
Apr 01, 2025
Response after Non-Final Action
May 07, 2025
Non-Final Rejection mailed — §103
Sep 08, 2025
Response Filed
Oct 01, 2025
Final Rejection mailed — §103
Mar 02, 2026
Request for Continued Examination
Mar 15, 2026
Response after Non-Final Action
Jun 08, 2026
Non-Final Rejection mailed — §103 (current)

Precedent Cases

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Study what changed to get past this examiner. Based on 2 most recent grants.

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Prosecution Projections

3-4
Expected OA Rounds
64%
Grant Probability
82%
With Interview (+17.9%)
3y 1m (~0m remaining)
Median Time to Grant
High
PTA Risk
Based on 11 resolved cases by this examiner. Grant probability derived from career allowance rate.

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