# US 2026/0101367 A1 · Update procedures for co-existence handling in wlans

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- Number: US 2026/0101367 A1
- Document ID: US20260101367A1
- Status: Published application
- Kind: A1
- Application number: 19/348,017
- Filed: 2025-10-02
- Published: 2026-04-09
- Earliest claimed: 2024-10-09
- Assignees: Samsung Electronics Co., Ltd.
- Applicants: Samsung Electronics Co., Ltd.
- Inventors: Peshal Nayak; Boon Loong Ng; Rubayet Shafin; Vishnu Vardhan Ratnam; Yue Qi; Bilal Sadiq
- Web page: https://patentgrep.com/patent/US20260101367A1

## CPC

- H04W 74/04: Scheduled access (hybrid access H04W74/02)
- H04W 84/12: WLAN [Wireless Local Area Networks]
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A station (STA) includes a processor configured to determine scheduling information for one or more unavailability events. The STA also includes a transceiver operably coupled to the processor. The transceiver is configured to transmit, to an access point (AP), a control frame including the scheduling information for the one or more unavailability events.

## Claims

### Claim 1

A station (STA) comprising:
a processor configured to determine scheduling information for one or more unavailability events; and
a transceiver operably coupled to the processor, the transceiver configured to transmit, to an access point (AP), a control frame including the scheduling information for the one or more unavailability events.

### Claim 2 (depends on 1)

The STA of claim 1, wherein the control frame is at least one of an unsolicited control frame and a substitute for a block acknowledgement (BA) frame.

### Claim 3 (depends on 1)

The STA of claim 1, wherein the one or more unavailability events include one or more coexistence (Co-Ex) events.

### Claim 4 (depends on 1)

The STA of claim 1, wherein the scheduling information for the one or more unavailability events is cumulative information of a plurality of unavailability events.

### Claim 5 (depends on 1)

The STA of claim 1, wherein the scheduling information includes at least one of:
an unavailability event identifier;
an unavailability event start time; and
an unavailability event duration.

### Claim 6 (depends on 1)

The STA of claim 1, wherein the scheduling information includes at least one of:
an indication that the scheduling information includes an updated schedule for an unavailability event previously provided to the AP; and
an indication that the scheduling information includes a schedule for an unavailability event that has not been previously provided to the AP.

### Claim 7 (depends on 1)

The STA of claim 1, wherein:
the scheduling information includes an indication that the scheduling information includes an updated schedule for an unavailability event previously provided to the AP; and
the indication is at least one of:
an unavailability event start time previously provided to the AP; and
a reason code field in the control frame indicating that the control frame is for updating the unavailability event previously provided to the AP.

### Claim 8 (depends on 1)

The STA of claim 1, wherein the scheduling information includes an unavailability event start time that serves as an unavailability event identifier.

### Claim 9 (depends on 1)

The STA of claim 1, wherein:
the control frame is a buffer status report poll (BSRP) non-trigger based (NTB) trigger frame; and
the scheduling information is a feedback user info field with a feedback type field set to 0 and an unavailability event duration field set to 0 that indicates that the STA intends to transition from unavailable to available.

### Claim 10 (depends on 1)

The STA of claim 1, wherein the scheduling information includes an indication of cancelation of unavailability information associated with a corresponding unavailability event previously provided to the AP.

### Claim 11

An access point (AP) comprising:
a transceiver configured to receive, from a station (STA), a control frame including scheduling information for one or more unavailability events; and
a processor operably coupled to the transceiver, the processor configured to:
determine an unavailability time of the STA based on the scheduling information; and
refrain from scheduling a downlink transmission for the STA during the unavailability time.

### Claim 12 (depends on 11)

The AP of claim 11, wherein the control frame is at least one of an unsolicited control frame and a substitute for a block acknowledgement (BA) frame.

### Claim 13 (depends on 11)

The AP of claim 11, wherein the one or more unavailability events include one or more coexistence (Co-Ex) events.

### Claim 14 (depends on 11)

The AP of claim 11, wherein the scheduling information for the one or more unavailability events is cumulative information of a plurality of unavailability events.

### Claim 15 (depends on 11)

The AP of claim 11, wherein the scheduling information includes at least one of:
an unavailability event identifier;
an unavailability event start time; and
an unavailability event duration.

### Claim 16 (depends on 11)

The AP of claim 11, wherein the scheduling information includes at least one of:
an indication that the scheduling information includes an updated schedule for an unavailability event previously provided to the AP; and
an indication that the scheduling information includes a schedule for an unavailability event that has not been previously provided to the AP.

### Claim 17 (depends on 11)

The AP of claim 11, wherein:
the scheduling information includes an indication that the scheduling information includes an updated schedule for an unavailability event previously provided to the AP; and
the indication is at least one of:
an unavailability event start time previously provided to the AP; and
a reason code field in the control frame indicating that the control frame is for updating the unavailability event previously provided to the AP.

### Claim 18 (depends on 11)

The AP of claim 11, wherein the scheduling information includes an unavailability event start time that serves as an unavailability event identifier.

### Claim 19 (depends on 11)

The AP of claim 11, wherein:
the control frame is a buffer status report poll (BSRP) non-trigger based (NTB) trigger frame; and
the scheduling information is a feedback user info field with a feedback type field set to 0 and an unavailability event duration field set to 0 that indicates that the STA intends to transition from unavailable to available.

### Claim 20 (depends on 11)

The AP of claim 11, wherein the scheduling information includes an indication of cancelation of unavailability information associated with a corresponding unavailability event previously provided to the AP.