US-20260129681-A1 - SYSTEM AND METHOD FOR WIRELESS COMMUNICATIONS UNDER A MULTIPLE FEATURE DELAY

Abstract

Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to enable features that are used in a transmit opportunity (TXOP) and a wireless transceiver configured to announce delays associated with the enabled features that are used in the TXOP and to conduct wireless communications with the enabled features in the TXOP.

Inventors

• Liwen Chu
• Rui Cao
• Kiseon Ryu
• Huizhao Wang
• Hongyuan Zhang

Assignees

• NXP USA, INC.

Dates

Publication Date

20260507

Application Date

20251030

Claims (20)

1. 1 . A wireless device comprising: a controller configured to enable a plurality of features that are used in a transmit opportunity (TXOP); and a wireless transceiver configured to announce a plurality of delays associated with the enabled features that are used in the TXOP and to conduct wireless communications with the enabled features in the TXOP.
2. 2 . The wireless device of claim 1 , wherein the wireless device acts as a TXOP responder, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the delays associated with the enabled features that are used in the TXOP.
3. 3 . The wireless device of claim 2 , wherein both a TXOP holder and the TXOP responder treat the multiple feature delay as a delay of the enabled features that are used by the TXOP responder in the TXOP.
4. 4 . The wireless device of claim 3 , wherein the multiple feature delay is figured out or deciphered by the TXOP responder and the TXOP holder.
5. 5 . The wireless device of claim 1 , wherein the enabled features comprise at least two of dynamic subband operation (DSO), dynamic power save (DPS), enhanced multilink single-radio (EMLSR), and non-primary channel access (NPCA).
6. 6 . The wireless device of claim 5 , wherein a delay associated with the DSO comprises a DSO switchback delay from a DSO subband to a DSO primary channel, wherein a delay associated with the DPS comprises a DPS transition delay from a high capacity (HC) mode to a low capacity (LC) mode, wherein a delay associated with the EMLSR comprises an EMLSR transition delay from a frame exchange operation to a listening operation, and wherein a delay associated with the NPCA comprises an NPCA switchback delay from an NPCA primary channel to a primary channel.
7. 7 . The wireless device of claim 6 , wherein the wireless device acts as a TXOP responder, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the DSO switchback delay, the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay.
8. 8 . The wireless device of claim 6 , wherein the wireless device acts as a TXOP responder that uses the NPCA with at least one of the DPS and the EMLSR being allowed to be used simultaneously, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the DPS transition delay and the EMLSR transition delay if the wireless device does not switch to the primary channel.
9. 9 . The wireless device of claim 6 , wherein the wireless device acts as a TXOP responder that uses the NPCA with at least one of the DPS and the EMLSR being allowed to be used simultaneously, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay if the wireless device switches to the primary channel.
10. 10 . The wireless device of claim 1 , wherein the enabled features comprise at least two of dynamic subband operation (DSO), dynamic power save (DPS), dynamic unavailability operation (DUO), enhanced multilink single-radio (EMLSR), and non-primary channel access (NPCA).
11. 11 . The wireless device of claim 2 , wherein a wireless station (STA), which is affiliated with a same non-access point (AP) multi-link device (MLD) as the wireless device and is in an EMLSR link, uses the multiple feature delay as its EMLSR transition delay.
12. 12 . The wireless device of claim 1 , wherein the wireless device is compatible with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 protocol.
13. 13 . A method for wireless communications, the method comprising: at a wireless device, enabling a plurality of features that are used in a transmit opportunity (TXOP); and at the wireless device, announcing a plurality of delays associated with the enabled features that are used in the TXOP and conducting wireless communications with the enabled features in the TXOP.
14. 14 . The method of claim 13 , wherein the wireless device acts as a TXOP responder, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the delays associated with the enabled features that are used in the TXOP.
15. 15 . The method of claim 14 , wherein both a TXOP holder and the TXOP responder treat the multiple feature delay as a delay of the enabled features that are used by the TXOP responder in the TXOP.
16. 16 . The method of claim 15 , wherein the multiple feature delay is figured out or deciphered by the TXOP responder and the TXOP holder.
17. 17 . The method of claim 13 , wherein the enabled features comprise at least two of dynamic subband operation (DSO), dynamic power save (DPS), enhanced multilink single-radio (EMLSR), and non-primary channel access (NPCA).
18. 18 . The method of claim 17 , wherein a delay associated with the DSO comprises a DSO switchback delay from a DSO subband to a DSO primary channel, wherein a delay associated with the DPS comprises a DPS transition delay from a high capacity (HC) mode to a low capacity (LC) mode, wherein a delay associated with the EMLSR comprises an EMLSR transition delay from a frame exchange operation to a listening operation, and wherein a delay associated with the NPCA comprises an NPCA switchback delay from an NPCA primary channel to a primary channel.
19. 19 . The method of claim 18 , wherein the wireless device acts as a TXOP responder, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the DSO switchback delay, the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay.
20. 20 . The method of claim 18 , wherein the wireless device acts as a TXOP responder that uses the NPCA with at least one of the DPS and the EMLSR being allowed to be used simultaneously, and wherein the TXOP responder's delay comprises a multiple feature delay, which is a maximum value of the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay if the wireless device switches to the primary channel.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS This application is entitled to the benefit of U.S. Provisional Patent Application Ser. No. 63/714,921, filed on Nov. 1, 2024 and U.S. Provisional Patent Application Ser. No. 63/846,741, filed on Jul. 18, 2025, the contents of each of which are incorporated by reference herein in their entireties. BACKGROUND Wireless communications devices, e.g., access points (APs) or non-AP devices transmit various types of information using different transmission techniques. For example, various applications, such as, Internet of Things (IoT) applications conduct wireless local area network (WLAN) communications, for example, based on Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards (e.g., Wi-Fi standards). In multi-link communications, an access point (AP) multi-link device (MLD) wirelessly transmits data to one or more wireless stations in a non-AP MLD through one or more wireless communications links. Some applications, for example, video teleconferencing, streaming entertainment, high definition (HD) video surveillance applications, outdoor video sharing applications, etc., require relatively high system throughput. SUMMARY Embodiments of a method and apparatus for wireless communications are disclosed. In an embodiment, a wireless device includes a controller configured to enable features that are used in a transmit opportunity (TXOP) and a wireless transceiver configured to announce delays associated with the enabled features that are used in the TXOP and to conduct wireless communications with the enabled features in the TXOP. Other embodiments are also disclosed. In an embodiment, the wireless device acts as a TXOP responder, and the TXOP responder's delay includes a multiple feature delay, which is a maximum value of the delays associated with the enabled features that are used in the TXOP. In an embodiment, both a TXOP holder and the TXOP responder treat the multiple feature delay as a delay of the enabled features that are used by the TXOP responder in the TXOP. In an embodiment, the multiple feature delay is figured out or deciphered by the TXOP responder and the TXOP holder. In an embodiment, the enabled features include at least two of dynamic subband operation (DSO), dynamic power save (DPS), enhanced multilink single-radio (EMLSR), and non-primary channel access (NPCA). In an embodiment, a delay associated with the DSO includes a DSO switchback delay from a DSO subband to a DSO primary channel, a delay associated with the DPS includes a DPS transition delay from a high capacity (HC) mode to a low capacity (LC) mode, a delay associated with the EMLSR includes an EMLSR transition delay from a frame exchange operation to a listening operation, and a delay associated with the NPCA includes an NPCA switchback delay from an NPCA primary channel to a primary channel. In an embodiment, the wireless device acts as a TXOP responder, and the TXOP responder's delay includes a multiple feature delay, which is a maximum value of the DSO switchback delay, the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay. In an embodiment, the wireless device acts as a TXOP responder that uses the NPCA with at least one of the DPS and the EMLSR being allowed to be used simultaneously, and the TXOP responder's delay includes a multiple feature delay, which is a maximum value of the DPS transition delay and the EMLSR transition delay if the wireless device does not switch to the primary channel. In an embodiment, the wireless device acts as a TXOP responder that uses the NPCA with at least one of the DPS and the EMLSR being allowed to be used simultaneously, and the TXOP responder's delay includes a multiple feature delay, which is a maximum value of the DPS transition delay, the EMLSR transition delay, and the NPCA switchback delay if the wireless device switches to the primary channel. In an embodiment, the enabled features include at least two of dynamic subband operation (DSO), dynamic power save (DPS), dynamic unavailability operation (DUO), enhanced multilink single-radio (EMLSR), and non-primary channel access (NPCA). In an embodiment, a wireless station (STA), which is affiliated with a same non-access point (AP) multi-link device (MLD) as the wireless device and is in an EMLSR link, uses the multiple feature delay as its EMLSR transition delay. In an embodiment, the wireless device is compatible with an Institute of Electrical and Electronics Engineers (IEEE) 802.11 protocol. In an embodiment, a method for wireless communications includes at a wireless device, enabling features that are used in a transmit opportunity (TXOP) and at the wireless device, announcing delays associated with the enabled features that are used in the TXOP and conducting wireless communications with the enabled features in the TXOP. In an embodiment, the wireless device acts as a TXOP responder, and the TXOP responder's delay includes a multiple fe