Prosecution Insights
Last updated: May 29, 2026
Application No. 18/525,716

ENHANCED DISTRIBUTED CHANNEL ACCESS (EDCA) FOR COORDINATED CHANNEL ACCESS

Final Rejection §102§112
Filed
Nov 30, 2023
Examiner
MADDOX, MICHAEL WAYNE
Art Unit
2463
Tech Center
2400 — Computer Networks
Assignee
Qualcomm Incorporated
OA Round
2 (Final)
100%
Grant Probability
Favorable
3-4
OA Rounds
1m
Est. Remaining
99%
With Interview

Examiner Intelligence

Grants 100% — above average
100%
Career Allowance Rate
24 granted / 24 resolved
+42.0% vs TC avg
Minimal +0% lift
Without
With
+0.0%
Interview Lift
resolved cases with interview
Typical timeline
2y 7m
Avg Prosecution
15 currently pending
Career history
46
Total Applications
across all art units

Statute-Specific Performance

§103
91.2%
+51.2% vs TC avg
§102
5.3%
-34.7% vs TC avg
§112
3.5%
-36.5% vs TC avg
Black line = Tech Center average estimate • Based on career data from 24 resolved cases

Office Action

§102 §112
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 . Claim Rejections - 35 USC § 112 The following is a quotation of 35 U.S.C. 112(b): (b) CONCLUSION.—The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the inventor or a joint inventor regards as the invention. The following is a quotation of 35 U.S.C. 112 (pre-AIA ), second paragraph: The specification shall conclude with one or more claims particularly pointing out and distinctly claiming the subject matter which the applicant regards as his invention. Claim 8 is rejected under 35 U.S.C. 112(b) or 35 U.S.C. 112 (pre-AIA ), second paragraph, as being indefinite for failing to particularly point out and distinctly claim the subject matter which the inventor or a joint inventor (or for applications subject to pre-AIA 35 U.S.C. 112, the applicant), regards as the invention. Regarding claim 8, claim 8 is dependent upon and includes the limitations of claim 7. Claim 8 recites in part that “wherein the processing system is configured to cause the first wireless device to: transmit one or more rTWT negotiation messages to the second wireless device…”. In contrast, claim 7 recites in part that “wherein the processing system is configured to: cause the first wireless device to receive one or more rTWT negotiation messages from the second wireless device…”. It is unclear whether the “one or more rTWT negotiation messages” recited in claim 8 are intended to be the same “one or more rTWT negotiation messages” recited in claim 7, or how the “one or more rTWT negotiation messages are both received from the second wireless device (claim 7) and transmitted to the second wireless device (claim 8). 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. Claims 1-4, 7, 9-13, and 15-18 are rejected under 35 U.S.C. 102(a)(2) as being anticipated by Viger et al. (WO 2024/213545 A1)(hereinafter “Viger”). Regarding claim 1, Viger discloses a first wireless device (Figure 8a, pg. 35, lines 35-36: a communication device 800 configured to implement at least one embodiment of the present invention, for instance any of the (AP and non-AP) stations shown in Figure 1.), comprising: a processing system that includes processor circuitry (Figure 8a, pg. 36, line 4: a CPU 801) and memory circuitry (Figure 8a, pg. 36, line 5: a memory 803 for storing an executable code) that stores code, the processing system configured to cause the first wireless device to: receive one or more enhanced distributed channel access (EDCA) parameters associated with a restricted target wakeup time (rTWT) service period (SP) of a second wireless device (Figure 4a, pg.21, line 31 to pg. 22, line 11: it is assumed that a first AP of the MAP coordination, e.g., AP1 of BSS1 in Figure 1, has planned a TWT or R-TWT schedule in its own “first” BSS, which requires TWT coordination with the other BSSs of the MAP coordination set. At step 400, a neighbouring AP of the MAP coordination set receives a MAP coordination frame specifying a TWT schedule from the target AP of the same MAP coordination set. The neighbouring AP that receives TWT scheduling information thus handles a BSS interfering with the target BSS of the target AP. The neighbouring AP may be for example AP2 of BSS2 in Figure 1. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793, different from a legacy EDCA Parameter Set, to be applied by the stations of the neighbouring BSS to contend for access to the medium during the OBSS TWT SPs.); and communicate with one or more third wireless devices during the rTWT SP of the second wireless device according to the one or more EDCA parameters (pg. 21, lines 10-15: a second AP managing the second (neighbouring) BSS first receives, from a first AP managing the first target BSS, a MAP coordination frame specifying a TWT schedule provided in the first BSS. Next, the second AP, responsive to the receiving, sends, to stations of the second BSS, a frame including an overlapping BSS (OBSS) TWT element defining second TWT Service Periods, SPs, that are preferably aligned in time, or at least partially overlap, with first TWT SP of the TWT schedule in the first target BSS.). Regarding claim 2, Viger discloses all features of claim 1 as outlined above. Viger also discloses wherein, to receive the one or more EDCA parameters, the processing system is configured to cause the first wireless device to: receive, from the second wireless device, a beacon that includes the one or more EDCA parameters, wherein communicating during the rTWT SP of the second wireless device is in accordance with the received beacon (pg. 6, lines 29-30: in some embodiments, the frame including the OBSS TWT element is a beacon frame broadcast by the second AP in the second BSS. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 3, Viger discloses all features of claim 1 as outlined above. Viger also discloses wherein, to receive the one or more EDCA parameters, the processing system is configured to cause the first wireless device to: receive, from the second wireless device, an advertisement of the rTWT SP of the second wireless device, wherein the advertisement associates the one or more EDCA parameters with the first wireless device with respect to the rTWT SP of the second wireless device (pg. 16, lines 25-28: the R-TWT Service Periods SPs of the R-TWT schedule are advertised in broadcast management frames (e.g., beacons), using R-TWT information about the negotiated R-TWT SPs, typically a Broadcast TWT identifier (bTWT ID). Pg. 17, lines 3-5: the AP advertises the scheduled broadcast TWT (or R-TWT) using broadcast TWT elements in its management frames, typically in the beacon frame. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 4, Viger discloses all features of claim 3 as outlined above. Viger also discloses wherein the advertisement of the rTWT SP of the second wireless device further associates one or more additional EDCA parameters with a fourth wireless device with respect to the rTWT SP of the second wireless device (pg. 7, lines 22-25: in yet other embodiments, the MAP coordination frame is exchanged between a third AP co-affiliated with the first AP to the same first AP multi-link device, MLD, and a fourth AP coaffiliated with the second AP to the same second AP MLD, wherein the third and fourth APs operate on a link separate from the link on which the first and second APs operate. pg. 7, line 37 to pg. 8, line 5: a station device of a Basic Service Set, BSS, managed by an access point (AP) is also provided in a multi-AP (MAP) coordination set of APs, in a wireless network having a medium, the station comprising: a receiver configured to receive, from the AP, a frame including an overlapping BSS (OBSS) TWT element defining TWT Service Periods, SPs, a communication module configured to switch from a legacy EDCA Parameter Set to an OBSS EDCA Parameter Set to contend for access to the medium during one of the TWT SPs.). Regarding claim 7, Viger discloses all features of claim 1 as outlined above. Viger also discloses wherein, to receive the one or more EDCA parameters, the processing system is configured to cause the first wireless device to: receive one or more rTWT negotiation messages from the second wireless device, the one or more RTWT negotiation messages including the one or more EDCA parameters associated with the rTWT SP of the second wireless device (pg. 23, lines 3-6: in second embodiments, the MAP coordination frame is included in a negotiation process between the first and second APs to establish a MAP TWT agreement. That means the TWT Element is provided through a TWT agreement in between the two APs that may be used to initiate a (MAP) TWT session in between the two APs. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 9, Viger discloses all features of claim 1 as outlined above. Viger also discloses wherein the first wireless device is a first wireless access point (AP), and the second wireless device is a second wireless AP (Figure 4a, pg.21, line 31 to pg. 22, line 11: It is assumed that a first AP of the MAP coordination, e.g., AP1 of BSS1 in Figure 1, has planned a TWT or R-TWT schedule in its own “first” BSS, which requires TWT coordination with the other BSSs of the MAP coordination set. At step 400, a neighbouring AP of the MAP coordination set receives a MAP coordination frame specifying a TWT schedule from the target AP of the same MAP coordination set.). Regarding claim 10, Viger discloses all features of claim 1 as outlined above. Viger also discloses wherein the first wireless device is a wireless station (STA), and the second wireless device is a wireless access point (AP) (Figure 4b, pg. 33, lines 9-12: at step 450, a station of BSS2 receives, from its AP (AP2), an OBSS TWT element 600 (either conforming to Figure 6 or 7) in a beacon frame or a Probe Response frame. The OBSS TWT element defines an OBSS TWT schedule with OBSS TWT SPs that are aligned or overlapping with TWT SPs (to be protected) scheduled in the target BSS (BSS1).). Regarding claim 11, Viger discloses a first wireless device (Figure 8a, pg. 35, lines 35-36: a communication device 800 configured to implement at least one embodiment of the present invention, for instance any of the (AP and non-AP) stations shown in Figure 1.), comprising: a processing system that includes processor circuitry (Figure 8a, pg. 36, line 4: a CPU 801) and memory circuitry (Figure 8a, pg. 36, line 5: a memory 803 for storing an executable code) that stores code, the processing system configured to cause the first wireless device to: transmit, to a second wireless device, one or more first enhanced distributed channel access (EDCA) parameters associated with a restricted target wakeup time (rTWT) service period (SP) of the first wireless device (Figure 4a, pg.21, line 31 to pg. 22, line 11: it is assumed that a first AP of the MAP coordination, e.g., AP1 of BSS1 in Figure 1, has planned a TWT or R-TWT schedule in its own “first” BSS, which requires TWT coordination with the other BSSs of the MAP coordination set. At step 400, a neighbouring AP of the MAP coordination set receives a MAP coordination frame specifying a TWT schedule from the target AP of the same MAP coordination set. The neighbouring AP that receives TWT scheduling information thus handles a BSS interfering with the target BSS of the target AP. The neighbouring AP may be for example AP2 of BSS2 in Figure 1. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793, different from a legacy EDCA Parameter Set, to be applied by the stations of the neighbouring BSS to contend for access to the medium during the OBSS TWT SPs.); and communicate with one or more third wireless devices during the rTWT SP of the first wireless device according to one or more second EDCA parameters associated with the first wireless device (pg. 21, lines 10-15: a second AP managing the second (neighbouring) BSS first receives, from a first AP managing the first target BSS, a MAP coordination frame specifying a TWT schedule provided in the first BSS. Next, the second AP, responsive to the receiving, sends, to stations of the second BSS, a frame including an overlapping BSS (OBSS) TWT element defining second TWT Service Periods, SPs, that are preferably aligned in time, or at least partially overlap, with first TWT SP of the TWT schedule in the first target BSS.), the one or more second EDCA parameters being different from the one or more first EDCA parameters (pg. 31, lines 23-29: although the embodiments above provide the OBSS EDCA Parameter Set (793) within OBSS TWT element 600, variants may contemplate providing such Parameter Set in the beacon frames periodically broadcast by the neighbouring AP. Should different OBSS EDCA Parameter Sets be used for different OBSS TWT schedules of the neighbouring BSS, the OBSS EDCA Parameter Sets may be provided in the beacon frames in association with the bTWT ID of the respective OBSS TWT schedule. In these variants, it turns out that the AP broadcasts various EDCA Parameter sets.). Regarding claim 12, Viger discloses all features of claim 11 as outlined above. Viger also discloses wherein, to transmit the one or more first EDCA parameters, the processing system is configured to cause the first wireless device to: broadcast a beacon including the one or more first EDCA parameters (pg. 6, lines 29-30: in some embodiments, the frame including the OBSS TWT element is a beacon frame broadcast by the second AP in the second BSS. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 13, Viger discloses all features of claim 11 as outlined above. Viger also discloses wherein, to transmit the one or more first EDCA parameters, the processing system is configured to cause the first wireless device to: transmit an advertisement of the rTWT SP of the first wireless device, wherein the advertisement associates the one or more first EDCA parameters with the second wireless device with respect to the rTWT SP of the first wireless device (pg. 16, lines 25-28: the R-TWT Service Periods SPs of the R-TWT schedule are advertised in broadcast management frames (e.g., beacons), using R-TWT information about the negotiated R-TWT SPs, typically a Broadcast TWT identifier (bTWT ID). Pg. 17, lines 3-5: the AP advertises the scheduled broadcast TWT (or R-TWT) using broadcast TWT elements in its management frames, typically in the beacon frame. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 15, Viger discloses a method for wireless communication by a first wireless device, comprising: receiving one or more enhanced distributed channel access (EDCA) parameters associated with a restricted target wakeup time (rTWT) service period (SP) of a second wireless device (Figure 4a, pg.21, line 31 to pg. 22, line 11: it is assumed that a first AP of the MAP coordination, e.g., AP1 of BSS1 in Figure 1, has planned a TWT or R-TWT schedule in its own “first” BSS, which requires TWT coordination with the other BSSs of the MAP coordination set. At step 400, a neighbouring AP of the MAP coordination set receives a MAP coordination frame specifying a TWT schedule from the target AP of the same MAP coordination set. The neighbouring AP that receives TWT scheduling information thus handles a BSS interfering with the target BSS of the target AP. The neighbouring AP may be for example AP2 of BSS2 in Figure 1. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793, different from a legacy EDCA Parameter Set, to be applied by the stations of the neighbouring BSS to contend for access to the medium during the OBSS TWT SPs.); and communicating with one or more third wireless devices during the rTWT SP of the second wireless device according to the one or more EDCA parameters (pg. 21, lines 10-15: a second AP managing the second (neighbouring) BSS first receives, from a first AP managing the first target BSS, a MAP coordination frame specifying a TWT schedule provided in the first BSS. Next, the second AP, responsive to the receiving, sends, to stations of the second BSS, a frame including an overlapping BSS (OBSS) TWT element defining second TWT Service Periods, SPs, that are preferably aligned in time, or at least partially overlap, with first TWT SP of the TWT schedule in the first target BSS.). Regarding claim 16, Viger discloses all features of claim 15 as outlined above. Viger also discloses receiving, from the second wireless device, a beacon that includes the one or more EDCA parameters, wherein communicating during the rTWT SP of the second wireless device is in accordance with the received beacon (pg. 6, lines 29-30: in some embodiments, the frame including the OBSS TWT element is a beacon frame broadcast by the second AP in the second BSS. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 17, Viger discloses all features of claim 15 as outlined above. Viger also discloses receiving, from the second wireless device, an advertisement of the rTWT SP of the second wireless device, wherein the advertisement associates the one or more EDCA parameters with the first wireless device with respect to the rTWT SP of the second wireless device (pg. 16, lines 25-28: the R-TWT Service Periods SPs of the R-TWT schedule are advertised in broadcast management frames (e.g., beacons), using R-TWT information about the negotiated R-TWT SPs, typically a Broadcast TWT identifier (bTWT ID). Pg. 17, lines 3-5: the AP advertises the scheduled broadcast TWT (or R-TWT) using broadcast TWT elements in its management frames, typically in the beacon frame. Figure 7, pg. 29, lines 8-12: OBSS TWT Info 790 of OBSS TWT element 600 includes an OBSS EDCA Parameter Set 793.). Regarding claim 18, Viger discloses all features of claim 17 as outlined above. Viger also discloses wherein the advertisement of the rTWT SP of the second wireless device further associates one or more additional EDCA parameters with a fourth wireless device with respect to the rTWT SP of the second wireless device (pg. 7, lines 22-25: in yet other embodiments, the MAP coordination frame is exchanged between a third AP co-affiliated with the first AP to the same first AP multi-link device, MLD, and a fourth AP coaffiliated with the second AP to the same second AP MLD, wherein the third and fourth APs operate on a link separate from the link on which the first and second APs operate. pg. 7, line 37 to pg. 8, line 5: a station device of a Basic Service Set, BSS, managed by an access point (AP) is also provided in a multi-AP (MAP) coordination set of APs, in a wireless network having a medium, the station comprising: a receiver configured to receive, from the AP, a frame including an overlapping BSS (OBSS) TWT element defining TWT Service Periods, SPs, a communication module configured to switch from a legacy EDCA Parameter Set to an OBSS EDCA Parameter Set to contend for access to the medium during one of the TWT SPs.). Allowable Subject Matter Claims 5-6, 14, and 19-20 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 The prior art made of record and not relied upon is considered pertinent to applicant's disclosure. Cariou et al. (WO 2024/144755 A1) – Apparatus, System, and Method Of Configuring Multi-Access Point (AP). Handte et al. (US 2024/0196430 A1) – Communication Devices and Methods. Chu et al. (US 2024/0137982 A1) – Low Latency Support In MMWave Link. Xin et al. (US 2024/0008086 A1) – Prioritization Of R-TWT TIDS In R-TWT SPS. Nezou et al. (US 2023/0413176 A1) – Declaration of Low Latency Reliable Service In BSS. Xiu et al. (US 2023/0199847 A1) – Fast Restricted Target Wait Time Update. Lu et al. (US 2024/0251443 A1) – Wireless Communication Method, Non-AP STA, and AP. Fang et al. (US 2023/0051808 A1) – Prioritized Service Period For Time Sensitive Transmissions. Any inquiry concerning this communication or earlier communications from the examiner should be directed to MICHAEL W MADDOX whose telephone number is (571)272-5834. The examiner can normally be reached M-Th 7:30am-5:00pm, 1st F 7:30am-4:00pm, 2nd F off. 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. /MICHAEL WAYNE MADDOX/Examiner, Art Unit 2463 /CHI TANG P CHENG/Primary Examiner, Art Unit 2463
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Prosecution Timeline

Nov 30, 2023
Application Filed
Dec 12, 2025
Non-Final Rejection mailed — §102, §112
Feb 23, 2026
Response Filed
May 27, 2026
Final Rejection mailed — §102, §112 (current)

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Prosecution Projections

3-4
Expected OA Rounds
100%
Grant Probability
99%
With Interview (+0.0%)
2y 7m (~1m remaining)
Median Time to Grant
Moderate
PTA Risk
Based on 24 resolved cases by this examiner. Grant probability derived from career allowance rate.

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