MÉTODO E APARELHO PARA OPERAÇÃO DE CANAL

Abstract

A channel operation method and apparatus, a communication device, and a storage medium, relating to the technical field of wireless communications. The method is executed by a first device, and comprises: receiving a dynamic subchannel operation (DSO) mode management frame sent by a second device (401), wherein the DSO mode management frame is used for indicating that a DSO mode between the first device and the second device is an enable mode or a disable mode, the enable mode is a mode allowing a target device to be switched to a target subchannel in a DSO mode for frame exchange, and the target subchannel is indicated by the DSO mode management frame.

Description

1 / 66 METHOD AND APPARATUS FOR CHANNEL OPERATION FIELD OF TECHNIQUE

[001] This disclosure relates to the technical field of wireless communications and, in particular, relates to a method and apparatus for channel operation. RELATED TECHNIQUE

[002] In a wireless local area network (WLAN), a subchannel between an access point (AP) device and a non-AP device is dynamically transferred during communication between the AP device and the non-AP device. SUMMARY

[003] The embodiments of the present disclosure provide a method and apparatus for canal operation. The solutions of the technique are as follows.

[004] According to some embodiments of the present disclosure, a method for channel operation is provided. The method is executed by a first device and includes:

[005] receive a dynamic subchannel / subband (DSO) mode of operation management frame from a second device, wherein the DSO mode management frame is configured to indicate that a DSO mode between the first device and the second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device is allowed to transition to a target subchannel / subband via a DSO mode to perform frame exchange, wherein the target subchannel / subband is indicated by the DSO mode management frame.

[006] According to some modalities of Petition 870260021381, dated 09 / 03 / 2026, page 6 / 111 2 / 66 of this disclosure, a device for channel operation is provided. The device includes:

[007] a receiver module, configured to receive a DSO mode management frame from a second device, wherein the DSO mode management frame is configured to indicate whether a DSO mode between a first device and the second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device is allowed to transition to a target subchannel / subband via a DSO mode to perform frame exchange, wherein the target subchannel is indicated by the DSO mode management frame.

[008] According to some embodiments of this disclosure, a channel operating device is provided. The device includes:

[009] a transmission module, configured to transmit a DSO mode management frame to a first device, wherein the DSO mode management frame is configured to indicate whether a DSO mode between the first device and a second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device can transition to a target subchannel / subband via a DSO mode to perform frame exchange, wherein the target subchannel / subband is indicated by the DSO mode management frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] For clearer descriptions of the technical solutions according to the embodiments of the present disclosure, the following briefly introduces the accompanying drawings necessary to describe the embodiments. Apparently, the drawings Petition 870260021381, dated 09 / 03 / 2026, page 7 / 111 3 / 66 attachments in the following description show only some modalities of the present revelation, and people with ordinary skill in the technique can still derive other designs from them without creative effort.

[0011] Figure 1 is a schematic diagram of a network architecture of a communication system according to some embodiments of the present disclosure;

[0012] Figure 2 is a schematic diagram of a format for an individual Target Wake Time (TWT) Parameter Configuration field according to some embodiments of the present disclosure;

[0013] Figure 3 is a schematic diagram of the DSO operation according to some modalities of the present disclosure;

[0014] Figure 4 is a flowchart of a method for channel operation according to some modalities of the present disclosure;

[0015] Figure 5 is a flowchart of a method for channel operation according to some modalities of the present disclosure;

[0016] Figure 6 is a flowchart of a method for channel operation according to some modalities of the present disclosure;

[0017] Figure 7 is a schematic diagram of a DSO Mode Control field format according to the modalities in Figure 6;

[0018] Figure 8 is a schematic diagram of a DSO Parameter Update field format according to the modalities in Figure 6;

[0019] Figure 9 is a schematic diagram of Petition 870260021381, dated 09 / 03 / 2026, page 8 / 111 4 / 66 transition from a DSO mode and parameter update based on a notification frame according to some modalities in Figure 6;

[0020] Figure 10 is a schematic diagram of the transition from a DSO mode and parameter update based on a notification frame according to some modalities of Figure 6;

[0021] Figure 11 is a schematic diagram of DSO mode negotiation and / or parameter update based on a request / response frame based on a notification frame according to some modalities of Figure 6;

[0022] Figure 12 is a schematic diagram of DSO mode negotiation and / or parameter update based on a request / response frame based on a notification frame according to some modalities of Figure 6;

[0023] Figure 13 is a block diagram of a channel operation apparatus according to some embodiments of the present disclosure;

[0024] Figure 14 is a block diagram of a channel operation apparatus according to some embodiments of the present disclosure; and

[0025] Figure 15 is a schematic structural diagram of a communication device according to some embodiments of the present disclosure. DETAILED DESCRIPTION

[0026] For clearer descriptions of the objects, technical solutions and advantages of this disclosure, the embodiments of this disclosure are described in detail below in combination with the accompanying drawings.

[0027] Network architecture and scenarios Petition 870260021381, dated 09 / 03 / 2026, p. 9 / 111 5 / 66 The service described in the embodiments of this disclosure is intended to illustrate technical solutions according to the embodiments of this disclosure in a clearer manner, rather than any limitations. Those skilled in the art understand that, with the evolution of network architecture and the emergence of new service scenarios, the technical solutions according to the embodiments of this disclosure are also applicable to solve similar technical problems.

[0028] Figure 1 is a schematic diagram of a network architecture of a communication system according to some embodiments of the present disclosure. The network architecture involves a station (STA) 10 and an access point 20.

[0029] In general, a plurality of stations 10 is arranged, and each access point 20 is associated with one or more stations 10. A station 10 includes various portable devices with wireless communication function, in-vehicle devices, wearable devices, computing devices or other processing devices connected to the wireless modem, and various forms of user equipment (UEs), mobile stations (MSs), and terminal devices. For convenient description, the devices are collectively referred to as STA.

[0030] Access point 20 is a device deployed in the access network and configured to provide wireless communication functionality to station 10, and is also known as AP for short. Access point 20 includes various types of wireless routers, wireless switches, wireless relay devices, and similar devices.

[0031] Station 10 and / or access point 20 may be a multi-link device. Petition 870260021381, dated 09 / 03 / 2026, p. 10 / 111 6 / 66

[0032] In some embodiments, the network architecture may be another network device, for example, a gateway device and the like, which is not illustrated in Figure 1.

[0033] Station 10 and access point 20 communicate using wireless local area network technology, for example, IEEE 802.11 protocol.

[0034] The IEEE 802.11 BF working group is discussing the protocol to stipulate how to use WLAN signals that conform to the IEEE 802.11 protocol to achieve WLAN detection. The WLAN terminal participating in the detection process can be a detection session initiator, a detection session responder, a detection signal transmitter, and a detection signal receiver.

[0035] A WLAN discovery session includes one or more of the following stages: session setup, discovery measurement, discovery reporting, and session termination. The WLAN terminal can perform one or more functions in the discovery session. For example, a discovery session initiator is either a discovery session initiator, a discovery signal transmitter, a discovery signal receiver, or both a discovery signal transmitter and a discovery signal receiver.

[0036] Before describing the technical solution according to this disclosure, the technologies involved in this disclosure are described first. 1) HIGH EFFICIENCY (HE) SUBCHANNEL SELECTIVE TRANSMISSION OPERATION

[0037] The non-AP STA HE SST and the HE SST AP negotiate a trigger-enabled TWT to configure the SST. Petition 870260021381, dated 09 / 03 / 2026, p. 11 / 111 7 / 66

[0038] The TWT request may have a TWT Channel field with up to one bit set to 1 to indicate the secondary channel requested to contain the RU allocations addressed to the non-HE SST AP STA that is a 20 MHz operational STA.

[0039] The TWT request may have a TWT Channel field with all 4 least significant bits (LSBs) or all 4 most significant bits (MSBs) set to 1 to indicate whether the primary 80 MHz channel or the secondary 80 MHz channel is requested to contain the RU allocations addressed to the non-AP HE SST STA that is an operational 80 MHz STA.

[0040] The TWT response must have a TWT channel field with up to one bit set to 1 to indicate the secondary channel that will contain the resource unit (RU) allocations addressed to the non-AP HE SST STA that is a 20 MHz operational STA.

[0041] The TWT response must have a TWT channel field with all 4 LSBs or all 4 MSBs set to 1 to indicate whether the primary 80 MHz channel or the secondary 80 MHz channel will contain the RU allocations addressed to the non-AP HE SST STA that is an operational 80 MHz STA.

[0042] Figure 2 is a schematic diagram of a format for an individual TWT parameter configuration field according to some embodiments of the present disclosure. An individual TWT Parameter Set field in a TWT Parameter Information field in a TWT element contains a TWT Channel field.

[0043] The TWT Channel field contains a bitmap and provides information about a temporary channel with a TWT service period (SP) that is negotiated by the STA. Each bit in the map of Petition 870260021381, dated 09 / 03 / 2026, page 12 / 111 8 / 66 bits corresponds to a minimum bandwidth channel within the current operating frequency band of a Basic Services Set (BSS) associated with a TWT responding STA. The least significant bit corresponds to a lower numbered channel in the BSS's operating channels. In the HE BSS, the minimum bandwidth channel is 20 MHz. Setting a position in the bitmap transmitted by the TWT requesting STA as 1 is to request the determination of the channel corresponding to the position as a temporary channel during the TWT SP. Setting a position in the bitmap transmitted by the TWT responding STA as 1 is to allow the determination of the channel corresponding to the position as a temporary channel during the TWT SP.

[0044] In a case where the HE SST AP changes the operating channel or channel bandwidth, and any secondary trigger-enabled TWT channel is not within the new operating channel or channel bandwidth, the HE SST AP and the non-AP HE SST STA implicitly terminate the trigger-enabled TWT.

[0045] During TWT SP enabled trigger, frame exchange between the HE SST AP and the non-AP STA HE SST follows the rules stipulated in the individual TWT contract, and the AP must ensure that:

[0046] a multi-user physical layer protocol data unit (PPDU) (MU) downlink (DL) addressing the non-AP HE SST STA and an individual addressing RU allocated in a trigger frame are located within a subchannel indicated in the TWT Channel field of the TWT response;

[0047] TWT SP enabled trigger does not overlap with a target beacon transmission time (TBTT) Petition 870260021381, dated 09 / 03 / 2026, p. 13 / 111 9 / 66 to transmit a Delivery Traffic Indication Message (DTIM) beacon frame; and

[0048] the same subchannel is used for the same non-AP STA HE SST and all trigger-enabled SPs TWT that overlap in time.

[0049] During the TWT SP trigger-enabled, the exchange of frames between the non-AP HE SST STA and the HE SST AP follows the rules stipulated in the individual TWT contract, and the non-AP STA must ensure that:

[0050] the STA must be available in a subchannel indicated in the TWT Channel field of the TWT response at the beginning of the TWT;

[0051] a distributed coordination function (DCF) or enhanced distributed channel access function (EDCAF) should not be used to access a medium in the subchannel; and

[0052] a non-AP STA must not respond to the trigger frame transmitted to the non-AP STA unless the non-AP STA has performed a free channel assessment (CCA), until a frame that can define a network allocation vector (NAV) is detected or until a period equal to NAVSyncDelay occurs, whichever comes first.

[0053] In a case where the PPDU is received on the subchannel, the NAV is updated based on the two-NAV update rule on access to the HE channel.

[0054] A non-AP HE SST STA includes a channel transition time element in a (re)association request frame transmitted to the HE SST AP to indicate a time required for the STA to transition between different subchannels. The received channel transition time notifies the HE SST AP of a possible duration during which the non-AP HE SST STA will be available. Petition 870260021381, dated 09 / 03 / 2026, page 14 / 111 10 / 66 does not receive the frame before the start of the TWT and after the end of the TWT SP is enabled for triggering. 2) DYNAMIC SUBBANDA OPERATION

[0055] IEEE 802.11-22 / 2204r0 proposed dynamic subband operation that allows a 320 MHz AP to dynamically allocate a transmit (Tx) / receive (Rx) opportunity on a secondary 160 MHz band to a non-AP 160 MHz device or expand to any AP / non-AP STA bandwidth combination supported by the AP with a bandwidth greater than the bandwidth of a non-AP STA. In each dynamically allocated opportunity, the operation can be either DL transmission or trigger-based uplink transmission (UL).

[0056] Dynamic subband operation allows the AP to dynamically use the secondary 160 MHz bandwidth on transmit opportunity (TXOP) to gain channel access in the secondary 160 MHz.

[0057] The AP dynamically determines whether to allocate bandwidth to the non-AP STA in the primary or secondary 160 MHz bands based on bandwidth availability, channel conditions, and Quality of Service (QoS) requirements, and which non-AP STA to allocate to in the method.

[0058] The dynamic subband operation is that, in a case where the AP starts acquiring the TXOP in the 320 MHz bandwidth, the AP transmits an indication to a non-AP STA that supports DSO to request that the non-AP STA transition to the secondary 160 MHz for the TXOP and then continue to perform frame exchange in the secondary 160 MHz.

[0059] Figure 3 is a schematic diagram of the DSO operation according to some embodiments of the present Petition 870260021381, dated 09 / 03 / 2026, p. 15 / 111 11 / 66 disclosure. The AP sends to the non-AP DSO being programmed a subband switch control frame, which is a special initial control frame (it can be a modified MURTS or BSRP or a newly defined frame) that indicates a transition to the secondary 160 MHz band.

[0060] The subband switch control frame has sufficient padding to cover the subband switch delay (i.e., the delay required for the non-AP STA to transition from the primary 160 MHz to the secondary 160 MHz). At the end of the TXOP (e.g., the end of the TXOP is monitored via a SIFS interval plus an incremental time), the non-AP DSO transitions to operate on the primary 160 MHz.

[0061] Currently, the HE SST operation in IEEE 802.11ax is defined based on individual TWT. That is, the non-AP STA performing the HE SST operation must first negotiate and configure an individual TWT contract with the AP, and then the AP and the non-AP STA perform frame exchange during the scheduled trigger-enabled SP TWT via SST. The main problem with the HE SST operation is the lack of dynamism in the pre-programmed SP, i.e.,

[0062] 1) During pre-scheduled semi-static SP, it is impossible to guarantee that the AP will gain a channel access opportunity on the secondary channel; and in the event that the AP fails to obtain a channel access opportunity on the secondary channel, the advantages of SST operation may not be demonstrated; and

[0063] 2) In a case where the AP gains the opportunity to access the secondary channel in addition to the semi-static SP, the AP cannot schedule any non-AP STA SSTs for the SST operation during the period. Petition 870260021381, dated 09 / 03 / 2026, page 16 / 111 12 / 66

[0064] Dynamic subband operation allows dynamically indicating that the non-AP STA supporting DSO is performing frame exchange on the specified secondary channel during the TXOP period after the AP acquires the TXOP. While the DSO method improves dynamism, it lacks a negotiation mechanism between the AP and the non-AP STA for DSO. Without this negotiation, it is difficult to ensure that the non-AP STA is suitable for DSO operation due to the lack of negotiation. For example, whether DSO operation can be effectively performed or demonstrate its advantages is subject to several factors, such as the communication behavior requirements of the non-AP station, the suitability of the non-AP station's channel conditions on the secondary channel (e.g., a received signal strength indicator (RSSI)) for frame exchange on the secondary channel, and the QoS parameter requirements of the non-AP station.

[0065] Due to the lack of dynamism in HE SST operation and the lack of a negotiation and operation management mechanism between the AP and the non-AP STA in the current dynamic subband method, this disclosure provides a method for managing the dynamic subchannel (subband) operating mode (DSO).

[0066] Figure 4 is a flowchart of a method for channel operation according to some embodiments of the present disclosure. The method is performed by a first device. The first device is station 10 or access point 20 in the network architecture illustrated in Figure 1. The method includes the following process.

[0067] In the S401, the first device receives a DSO mode management frame from a second device. Petition 870260021381, dated 09 / 03 / 2026, page 17 / 111 13 / 66

[0068] The DSO mode management frame is configured to indicate whether a DSO mode between the first device and the second device is enabled or disabled. Enabled mode is a mode in which a target device is allowed to transition to a target subchannel via a DSO mode to perform frame exchange, where the target subchannel is indicated by the DSO mode management frame.

[0069] In summary, in the technical solution according to the embodiments of this disclosure, the first device supporting DSO receives the DSO mode management frame from the second device to negotiate whether to allow the target device in both devices to transition to the target subchannel via DSO mode to perform frame exchange. In the method, a negotiation mechanism for DSO is proposed, such that the opportunity and subchannel for frame exchange based on DSO between the first and second devices are controllable, the flexibility of the DSO mechanism is enhanced, and the communication effect of frame exchange based on DSO is further improved. [007 0] Figure 5 is a flowchart of a method for channel operation according to some embodiments of the present disclosure. The method is executed by a second device. The second device is station 10 or access point 20 in the network architecture illustrated in Figure 1. The method includes the following process.

[0071] In S501, the second device transmits a DSO mode management frame to a first device. Petition 870260021381, dated 09 / 03 / 2026, page 18 / 111 14 / 66

[0072] The DSO mode management frame indicates whether a DSO mode between the first device and the second device is enabled or disabled. Enabled mode is a mode in which a target device is allowed to transition to a target subchannel via a DSO mode to perform frame exchange, where the target subchannel is indicated by the DSO mode management frame.

[0073] In summary, in the technical solution according to the embodiments of this disclosure, the second device supporting DSO transmits the DSO mode management frame to the first device to negotiate whether to allow the target device in both devices to transition to the target subchannel via DSO mode to perform frame exchange. In the method, a negotiation mechanism for DSO is proposed, such that the opportunity and subchannel for frame exchange based on DSO between the first and second devices are controllable, the flexibility of the DSO mechanism is enhanced, and the communication effect of frame exchange based on DSO is further improved.

[0074] Figure 6 is a flowchart of a method for channel operation according to some embodiments of the present disclosure. The method is performed based on the interaction between a first device and a second device. The first device and the second device are, respectively, station 10 or access point 20 in the network architecture illustrated in Figure 1. The method includes the following process.

[0075] In the S601, the second device transmits a DSO mode management frame to the first. Petition 870260021381, dated 09 / 03 / 2026, page 19 / 111 15 / 66 device and the first device receives the DSO mode management frame.

[0076] The DSO mode management frame indicates whether a DSO mode between the first device and the second device is enabled or disabled. Enabled mode is a mode in which a target device is allowed to transition to a target subchannel via a DSO mode to perform frame exchange, where the target subchannel is indicated by the DSO mode management frame.

[0077] In some embodiments, the target device is at least one of the first device or the second device.

[0078] The first device is an AP device and the second device is a non-AP device. Alternatively, the first device is a non-AP device and the second device is an AP device.

[0079] The target device is an AP device, a non-AP device, or a combination thereof.

[0080] In technical solutions, the effect of the enabled mode is expanded to the AP device and / or the non-AP device, so that the scope of the enabled mode effect is broadened and the flexibility of the DSO mechanism is further enhanced.

[0081] In some embodiments, disabled mode is a mode in which the target device is not allowed to perform frame exchange via DSO mode; or disabled mode is a mode in which the target device is not allowed to transition to the target subchannel via DSO mode to perform frame exchange.

[0082] In disabled mode, the target device Petition 870260021381, dated 09 / 03 / 2026, page 20 / 111 16 / 66 does not perform frame exchange via DSO mode. For example, using an example where the target device is a non-AP device, in a case where the non-AP device is in disabled mode and the AP device wins the TXOP, the AP device does not indicate that the non-AP device transitions to the subchannel via DSO mode to perform frame exchange. For example, the AP device does not transmit an initial DSO control frame to the non-AP device.

[0083] Alternatively, in disabled mode, the target device does not transition to the target subchannel via the DSO scheme to perform frame exchange. In some modes, the target device transitions to a different subchannel than the target subchannel via DSO mode to perform frame exchange. For example, using an example where the target device is a non-AP device, in a case where the non-AP device is in disabled mode and the AP device wins the TXOP on the target subchannel, the AP device does not indicate that the non-AP device transitions to the target subchannel via DSO mode to perform frame exchange.For example, the AP device does not transmit an initial DSO control frame to the non-AP device in a case where the AP device wins the TXOP on the target subchannel; and the AP device indicates that the non-AP device transitions to another subchannel via DSO mode to perform frame exchange in a case where the AP device wins the TXOP on a subchannel different from the target subchannel.

[0084] In the technical solution above, frame exchange between the AP device and / or the non-AP device via DSO mode in disabled mode is avoided / limited by negotiating the disabled mode, the opportunity, and the subchannel. Petition 870260021381, dated 09 / 03 / 2026, page 21 / 111 17 / 66 for frame exchange based on DSO between the first and second devices is controllable, the flexibility of the DSO mechanism is enhanced, and the communication effect of frame exchange based on DSO is further improved.

[0085] In some embodiments, the operation of the station that supports DSO is categorized into two modes: entering DSO mode (i.e., a DSO-enabled operating mode) and exiting DSO mode (i.e., a DSO-disabled operating mode).

[0086] 1) In DSO enabled operating mode, the The AP is communicating with the non-AP STA via DSO mode, meaning the AP is communicating with the non-AP STA dynamically using the secondary and / or primary channel configured or indicated by the DSO within the TXOP period when obtaining the TXOP from the secondary channel.

[0087] 2) In DSO disabled operating mode, the AP is communicating with the non-AP STA via a conventional operating channel (the primary channel and / or part of the secondary channels) of the non-AP STA, different from the secondary channel and / or the primary channel configured or indicated by the DSO.

[0088] In some modalities, the STA does not AP or the The AP associated with the STA does not initiate negotiation or notification for DSO operation mode. The negotiation or notification includes one or more negotiation or notification contents, i.e., transition (i.e., transition from DSO-enabled operation mode to DSO-disabled operation mode or transition from DSO-disabled operation mode to DSO-enabled operation mode) of the station's DSO operation mode. Petition 870260021381, dated 09 / 03 / 2026, page 22 / 111 18 / 66 (e.g., STA non-AP), and / or configuration or update of the operational parameter to perform the DSO (including indication of the DSO subchannel / subband, maximum TX bandwidth, transition delay between different operational subchannels / subbands required by the station, and similar).

[0089] Based on the dynamic subchannel (or subband) operating mode management (DSO) method, it is ensured that the DSO operation satisfies the communication behavior requirement of the AP and non-AP STA and conforms to the channel condition and QoS parameter requirement of the AP and non-AP STA (especially the non-AP STA) on the secondary channel.

[0090] In the S602, the first device and / or the second device defines, based on the DSO mode management frame, the DSO mode and / or an operational parameter to perform a DSO operation between the first device and the second device.

[0091] DSO mode includes a disabled DSO mode and an enabled DSO mode.

[0092] The operational parameter for performing a DSO operation is used in frame exchange via the DSO scheme by the target device.

[0093] In technical solutions, after negotiation, the first device and / or the second device defines the DSO mode and / or an operational parameter to perform a DSO operation locally, so that the opportunity and subchannel for frame exchange based on the DSO between the first device and the second device are controllable through the DSO mode and / or the operational parameter to perform Petition 870260021381, dated 09 / 03 / 2026, page 23 / 111 19 / 66 the DSO operation.

[0094] The DSO mode management frame is a DSO mode notification frame. Similarly, the first device transmits the DSO mode notification frame as a response to the second device within a timeout after receiving the DSO mode notification frame.

[0095] In a case where the DSO mode management frame is a DSO mode notification frame, the second device receives the DSO mode notification frame transmitted as a response by the first device within the timeout duration when transmitting the DSO mode notification frame and sets, based on the DSO mode management frame, the DSO mode and / or operational parameter to perform the DSO operation between the first device and the second device.

[0096] Alternatively, the second device defines, based on the DSO mode management frame, the DSO mode and / or operational parameter to perform the DSO operation between the first device and the second device after the arrival of a timeout duration in response to the non-receipt of the DSO mode notification frame transmitted as a response by the first device within the timeout duration when transmitting the DSO mode notification frame.

[0097] In the modalities, the negotiation of the DSO mode and / or the operational parameter to execute the DSO operation is obtained through the transmission and feedback mechanism using the notification frame, and an implementable solution to negotiate the DSO mode and / or the operational parameter to execute the DSO operation between the AP device and the Petition 870260021381, dated 09 / 03 / 2026, page 24 / 111 A 20 / 66 non-AP device solution is proposed. In this solution, it is not necessary to determine the DSO mode and / or operational parameter for executing the DSO operation notified by the initiator; only the DSO mode and / or operational parameter for executing the DSO operation are defined based on the information in the notification frame. Similarly, regardless of whether the initiator receives the transmitted notification frame, the initiator directly defines the DSO mode and / or operational parameter for executing the DSO operation. The implementation logic of the process is simple, and the negotiation efficiency is high.

[0098] In some embodiments, the DSO mode management frame is a DSO mode request frame. The configuration, by the first device and based on the DSO mode management frame, of the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device includes:

[0099] configure, based on the DSO mode request frame, the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device in response to the DSO mode acceptance determination and / or the operational parameter to perform the DSO operation indicated by the DSO mode request frame.

[00100] The method additionally includes: transmitting, by the first device, a first DSO mode response frame to the second device. The first DSO mode response frame indicates whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame. Petition 870260021381, dated 09 / 03 / 2026, page 25 / 111 21 / 66

[00101] The first response frame of the DSO mode includes a first status code. The first status code indicates whether the DSO mode and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

[00102] In a case where the DSO mode management frame is a DSO mode request frame, configuring, by the second device and based on the DSO mode management frame, the DSO mode between the first device and the second device includes:

[00103] receive a first DSO mode response frame transmitted as a response by the first device, wherein the first DSO mode response frame indicates whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame; and

[00104] configure, based on the DSO mode request frame, the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device in a case where the first DSO mode response frame indicates acceptance of the DSO mode and / or the operational parameter to perform the DSO operation indicated by the DSO mode request frame.

[00105] In the modalities, the negotiation of the DSO mode and / or the operational parameter to execute the DSO operation is obtained through the request and response mechanism using the request frame, and an implementable solution to negotiate the DSO mode and / or the operational parameter to execute the DSO operation between the AP device and the non-AP device is proposed. In the solution, the receiver determines whether to accept the Petition 870260021381, dated 09 / 03 / 2026, page 26 / 111 22 / 66 DSO mode and / or the operational parameter to execute the DSO operation notified by the initiator. In the process, the flexibility of configuring the negotiation process of the DSO mode and / or the operational parameter to perform the DSO operation is greater, and the negotiation effect is greater.

[00106] The method additionally includes: transmitting, by the first device, a second unsolicited DSO mode response frame to the second device, wherein the second DSO mode response frame indicates a recommended DSO mode and / or a recommended operational parameter for performing the DSO operation.

[00107] In some embodiments, the second DSO mode response frame includes a second status code, and the second status code indicates that the second DSO mode response frame is configured to recommend the DSO mode and / or the operational parameter to perform the DSO operation.

[00108] The method additionally includes: receiving, by the second device, a second unsolicited DSO mode response frame from the first device, wherein the second DSO mode response frame indicates a recommended DSO mode and / or a recommended operational parameter for performing the DSO operation.

[00109] Thus, the transmission, by the second device, of the DSO mode management frame to the first device includes: transmitting, by the second device, the DSO mode management frame to the first device based on the second DSO mode response frame.

[00110] In the modalities, in a case where the mode Petition 870260021381, dated 09 / 03 / 2026, page 27 / 111 23 / 66 DSO and / or the operational parameter to perform the DSO operation is negotiated using the request and response mechanism of the request frame. The receiver pre-recommends the DSO mode and / or the operational parameter to perform the DSO operation to the requester, so that the requester determines to negotiate which DSO mode and / or which operational parameter to perform the DSO operation based on the receiver's recommendation. The success rate of negotiating the DSO mode and / or the operational parameter to perform the DSO operation is improved, and the efficiency of the negotiation is enhanced.

[00111] In some modes, the DSO mode management panel includes at least one DSO Mode Control field and one DSO Parameter Update field.

[00112] The DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update an operational parameter to perform the DSO operation between the first device and the second device.

[00113] In some modes, the second response frame of the DSO mode includes at least one DSO Mode Control field and one DSO Parameter Update field.

[00114] The DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update the operational parameter to perform the DSO operation between the first device and the second device.

[00115] In the modalities, the framework structures of the DSO mode management framework and the second framework of Petition 870260021381, dated 09 / 03 / 2026, page 28 / 111 24 / 66 DSO mode response is defined, and the DSO mode and the operational parameter to execute the DSO operation are carried in different information, so that the flexibility of the information carried in the DSO mode management frame and in the second DSO mode response frame is improved.

[00116] In some embodiments, the DSO Mode Control field includes at least one DSO Mode subfield, one DSO Subchannel Bit Map subfield, one Maximum Transmission Bandwidth subfield, or one DSO Parameter Update Control field.

[00117] The DSO Mode subfield is set to indicate a DSO mode to which the transition will be made; the DSO Subchannel Bitmap subfield is set to indicate the target subchannel by means of a bitmap; the Maximum Transmission Bandwidth subfield is set to indicate a maximum PPDU bandwidth allowed for reception or transmission on the target subchannel; and the DSO Parameter Update Control field is set to indicate whether the DSO Parameter Update field is present in a current frame.

[00118] In the modes, the structure of the DSO Mode Control field frame is defined and the DSO mode to be transferred, the target subchannel, the maximum bandwidth and the information indicating whether the DSO parameter should be updated are carried in different subfields, so that the flexibility of the information carried in the DSO Mode Control field is enhanced.

[00119] In some modes, in a case where a parameter value in the DSO Mode subfield is a first parameter value, the DSO Mode subfield indicates the DSO mode to be Petition 870260021381, dated 09 / 03 / 2026, page 29 / 111 25 / 66 transferred is the enabled mode; or in a case where a parameter value in the DSO Mode subfield is a second parameter value, the DSO Mode subfield indicates that the DSO mode to transition to is the disabled mode.

[00120] The first parameter value and the second parameter value are one of 1 and respectively. For example, the first parameter value is 0 and the second parameter value is 1. Alternatively, the first parameter value is 1 and the second parameter value is 0.

[00121] In the modalities, different DSO modes are indicated by different parameters, so that the need for the signaling feature is reduced and the efficiency of the negotiation is improved.

[00122] In some modes, the DSO Parameter Update field includes at least one DSO Mode Fill Delay subfield or one DSO Transition Delay subfield.

[00123] The DSO Mode Fill Delay subfield is configured to indicate a minimum media access control (MAC) fill duration for a channel transition indication frame, where the channel transition indication frame is configured to trigger the target device to transition to the target subchannel via DSO mode to perform frame switching; and the DSO Transition Delay subfield is configured to indicate a transition delay for the transition from the target subchannel to a conventional subchannel.

[00124] The channel transition indication panel includes a channel transition control panel.

[00125] In the modalities, the field format Petition 870260021381, dated 09 / 03 / 2026, page 30 / 111 26 / 66 The DSO parameter update is defined, and the duration of the channel transition indication frame filling and the delay for the subchannel transition are indicated, so that the flexibility of frame switching via DSO mode by the target device indicated by the channel transition indication frame is improved.

[00126] In some modes, in a case where the DSO mode management frame is a DSO mode notification frame, the DSO Parameter Update field includes a Switch Timeout subfield.

[00127] The Switch Timeout subfield is configured to indicate a timeout duration for transmitting the DSO mode notification frame as a response from the first device to the second device upon receiving the DSO mode notification frame.

[00128] In the modes, the negotiation via the notification frame and the format of the DSO Parameter Update field are defined, and the duration of the transmission timeout of the DSO mode notification frame as a response in the notification frame negotiation between the first device and the second device is adjustable, so that the flexibility of the DSO mode negotiation and the operational parameter to execute the DSO operation is enhanced.

[00129] In the modalities of this disclosure, the transition from DSO mode and / or parameter update are achieved in the following two methods.

[00130] 1. The DSO mode transition and / or parameter update are obtained based on the notification frame. Petition 870260021381, dated 09 / 03 / 2026, page 31 / 111 27 / 66

[00131] In a case where a station (or an AP associated with the station) that supports DSO begins to initiate the DSO mode transition and / or the station's DSO parameter update, the station transmits the DSO mode notification frame to the associated AP (or the associated AP transmits the DSO mode notification frame to the station). In a case where the DSO Mode subfield takes a value of 1, the station's DSO mode is enabled; and in a case where the DSO Mode subfield takes a value of 0, the station's DSO mode is disabled.

[00132] After receiving the DSO mode notification frame from the station (or the station receives the DSO mode notification frame from the AP), the AP (or the station) transmits the DSO mode notification frame with a DSO Mode Control field and / or a DSO Parameter Update field (if present) that uses the same values ​​as the received DSO Mode Control field and / or the DSO Parameter Update field (if present) to the station within a transition timeout duration indicated by the DSO Switch Timeout subfield.

[00133] If the station initiates the DSO mode transition and / or DSO parameter update, the station enters the operating mode (DSO mode enabled or DSO mode disabled) indicated by the DSO Mode subfield after the transition timeout duration indicated by the DSO Switch Timeout subfield (carried by the station in a Capacity field, a Capacity element, or a DSO Parameter Update field) after successfully transmitting the DSO mode notification frame or after receiving the DSO mode notification frame from the AP. That is, if the DSO Mode subfield takes on a value of 0, the station exits the mode. Petition 870260021381, dated 09 / 03 / 2026, page 32 / 111 28 / 66 DSO or DSO mode disabled; and in a case where the DSO Mode subfield assumes a value of 1, the station enters DSO mode or DSO mode enabled.

[00134] In the event that the AP initiates the DSO mode transition and / or the station's DSO parameter update, the station enters the operating mode (DSO mode enabled or DSO mode disabled) indicated by the DSO Mode subfield after the transition timeout duration indicated by the DSO Switch Timeout subfield (carried by the station in a Capacity field, a Capacity element, a DSO Parameter Update field) after receiving the DSO mode notification frame or after successfully transmitting the DSO mode notification frame to the AP. That is, in a case where the DSO Mode subfield assumes a value of 0, the station exits DSO mode or DSO mode disabled; and in a case where the DSO Mode subfield assumes a value of 1, the station enters DSO mode or DSO mode enabled.

[00135] In a case where the station enters (or enables) DSO mode based on the interaction of the DSO mode notification frame, and the DSO mode notification frame contains the DSO Parameter Update field, after the station enters (or enables) DSO mode, in the communication between the AP and the station based on DSO, the station performs the DSO operation using the supported channel indicated by the DSO subchannel bitmap, the maximum bandwidth indicated by the Maximum Transmit Bandwidth field, the minimum MAC fill duration indicated by the DSO Mode Fill Delay subfield, and the transition delay indicated by the DSO Transition Delay subfield.

[00136] 2. The method for negotiating the DSO mode and / or Petition 870260021381, dated 09 / 03 / 2026, page 33 / 111 29 / 66 The parameter update is obtained based on the request / response frame.

[00137] In a case where a station (or an AP associated with the station) that supports DSO begins to initiate the DSO mode transition and / or the station's DSO parameter update, the station transmits the DSO mode request frame to the associated AP (or the associated AP transmits the DSO mode request frame to the station). In the DSO mode request frame, if the DSO Mode subfield takes a value of 1, the station is requested to enable DSO mode; and if the DSO Mode subfield takes a value of 0, the station is requested to disable DSO mode (i.e., exit).The DSO mode request form additionally includes a DSO Subchannel Bit Map subfield to request the indicated DSO-supported channel, a Maximum Transmit Bandwidth subfield to request the indicated maximum bandwidth, a DSO Mode Fill Delay subfield to request the indicated minimum MAC fill duration, and a DSO Transition Delay subfield to request the indicated transition delay.

[00138] After receiving the DSO mode request frame from the station (or after receiving the DSO mode request frame from the AP), the AP (or the station) transmits a DSO response frame to respond to the corresponding DSO mode request and accepts or rejects the corresponding DSO mode transition request and / or requests to update the DSO parameter.

[00139] In addition, the AP or non-AP STA additionally transmits a DSO mode response frame with a code. Petition 870260021381, dated 09 / 03 / 2026, page 34 / 111 30 / 66 status indicating a recommended DSO or transmits a null QoS frame or other frames carrying the DSO Mode Control subfield and / or the DSO Parameter Update subfield in an HT Control field Variant HE to recommend the recommended DSO mode (i.e., DSO mode enabled or disabled) and / or the DSO parameter to the target station.

[00140] The fields and related boxes of the DSO negotiation or notification are as follows. 1) DSO MODE CONTROL FIELD FORMAT

[00141] Figure 7 is a schematic diagram of a DSO Mode Control field format according to the embodiments of this disclosure.

[00142] As illustrated in Figure 7, the DSO Mode subfield indicates the operating mode to which it should be switched. In a case where the DSO Mode subfield takes on a value of 0, the device exits DSO mode or DSO mode is disabled; and in a case where the DSO Mode subfield takes on a value of 1, the device enters DSO mode or DSO mode is enabled.

[00143] The DSO Subchannel Bitmap subfield indicates a 16-bit bitmap and provides information on a temporary channel within a DSO transmission period that is negotiated or notified by the station. Each bit in the bitmap corresponds to a minimum bandwidth channel within a current operating frequency band of a BSS associated with a TWT response STA. The least significant bit corresponds to a lower numbered channel in the BSS's operating channels. In the HE BSS, EHT BSS, or UHR BSS, the minimum bandwidth channel is 20 MHz, and the least significant bit corresponds to the 20 MHz subchannel within the Petition 870260021381, dated 09 / 03 / 2026, p. 35 / 111 The 31 / 66 BSS bandwidth has the lowest frequency in all 20 MHz subchannels within the BSS bandwidth. Each bit in the bitmap corresponds to a subchannel, with the next highest frequency bandwidth being the minimum bandwidth channel (e.g., 20 MHz). Bits within the BSS bandwidth in the bitmap are set to 1 to indicate that the subchannel with the corresponding bandwidth being the minimum bandwidth channel (e.g., 20 MHz) is expected or permitted to be designated as a temporary channel for operation. Bits within the BSS bandwidth in the bitmap are set to 0 to indicate that the subchannel with the corresponding bandwidth being the minimum bandwidth channel (e.g., 20 MHz) is not expected or permitted to be designated as a temporary channel for operation.Specifically, the subchannels in which all bits in the DSO Subchannel Bitmap subfield are set to 1 and are determined as temporary channels are either contiguous subchannels or non-contiguous subchannels. If transmission and reception are performed simultaneously on multiple non-contiguous subchannels indicated by the DSO Subchannel Bitmap subfield, the communication rules based on the punched subchannel and / or the punched PPDU must be satisfied.

[00144] The Maximum Transmission Bandwidth subfield indicates the maximum PPDU bandwidth allowed for reception or transmission on the station's target subchannel. The indicated maximum PPDU bandwidth cannot exceed the maximum bandwidth supported by the station.

[00145] The DSO Parameter Update Control subfield is configured to indicate whether the field Petition 870260021381, dated 09 / 03 / 2026, p. 36 / 111 32 / 66 DSO Parameter Update is present in a current frame. In a case where the DSO Parameter Update Control field takes a value of 1, the management frame that carries the DSO Mode Control field includes the DSO Parameter Update field; or in a case where the DSO Parameter Update Control field takes a value of 0, the management frame that carries the DSO Mode Control field does not include the DSO Parameter Update field. 2) FORMAT OF THE DSO MODE PARAMETER UPDATE FIELD

[00146] Figure 8 is a schematic diagram of a DSO Parameter Update field format according to the modalities of this disclosure.

[00147] The DSO Mode Fill Delay subfield indicates the minimum duration of MAC fill requested or notified by the station for the subchannel transition control frame configured to indicate the DSO subchannel transition. The minimum MAC fill duration ensures that the station performing the DSO has sufficient time to transition between different subchannels for operation after receiving the DSO subchannel transition indication. In a case where the DSO Mode Fill Delay subfield is carried in the AP management frame and is reserved. The definition of the DSO Mode Fill Delay subfield is listed in Table 1. TABLE 1 DSO Mode Fill Delay subfield DSO Mode Fill Delay 0 0 μs 1 32 μs Petition 870260021381, dated 09 / 03 / 2026, page 37 / 111 33 / 66 2 64 μs 3 12 8 μs 4 256 μs 5-7 Reserved

[00148] The DSO Transition Delay subfield indicates a delay required for the transition from frame exchange in the DSO subchannel to a monitoring or transmit / receive operation in the conventional subchannel. The definition of the DSO Transition Delay subfield is listed in Table 2. TABLE 2 Subfield Transition Delay DSO Transition Delay DSO 0 0 μs 1 16 μs 2 32 μs 3 64 μs 4 12 8 μs 5 256 μs 6 — 7 Reserved

[00149] The Switch Timeout subfield indicates the timeout value for switching the notification frame from DSO mode to DSO mode transition and / or DSO parameter update, and the encoding is listed in Table 3. TABLE 3 Subfield Switching Timeout Transition Timeout 0 0 UTs 1 128 μs Petition 870260021381, dated 09 / 03 / 2026, page 38 / 111 34 / 66 2 256 ps 3 512 ps 4 1 TU 5 2 TUs 6 4 TUs 7 8 TUs 8 16 TUs 9 32 TUs 10 64 TUs 11 128 TUs 12-15 Reserved 3) DSO MODE NOTIFICATION BOX FORMAT AND REQUEST BOX / RESPONSE BOX (1) DSO MODE NOTIFICATION BOX

[00150] The DSO mode notification frame indicates that the station (initiator) that starts transmitting the frame changes the DSO mode. That is, the station enters or exits DSO mode.

[00151] The information in the DSO mode notification box is listed in Table 4. TABLE 4 Order Information 1 Category 2 Protected Action 3 Dialog Token 4 DSO Mode Control field 5 DSO Parameter Update field (optional)

[00152] The Category field follows the definitions Petition 870260021381, dated 09 / 03 / 2026, page 39 / 111 35 / 66 relevant from the Action field in IEEE 802.11.

[00153] The Protected Action field follows the relevant definitions of the Protected Action field in IEEE 802.11.

[00154] The Dialog Token field is set by the non-AP MLD to a non-zero value selected by the non-AP MLD and is also set by the AP to the corresponding duplicate value of the received DSO mode notification frame.

[00155] For the DSO Mode Control field, reference can be made to the above definition of the DSO Mode Control field format.

[00156] For the DSO Mode Parameter Update field, reference can be made to the format of the DSO Mode Parameter Update field above. (2) DSO MODE REQUEST FRAME

[00157] A station (an AP or non-AP station) negotiates DSO mode with the corresponding station (the corresponding non-AP station and AP) using the DSO mode request frame. The information in the Action field of the DSO mode request frame is listed in Table 5. TABLE 5 Order Information 1 Category 2 Protected Action 3 Dialog Token 4 DSO Mode Control field 5 DSO Parameter Update field (optional)

[00158] The Category field follows the definitions Petition 870260021381, dated 09 / 03 / 2026, page 40 / 111 36 / 66 relevant from the Action field in IEEE 802.11.

[00159] The Protected Action field follows the relevant definitions of the Protected Action field in IEEE 802.11.

[00160] The Dialogue Token field is set by the station transmitting the DSO mode request frame to a non-zero value to mark the request / response traffic.

[00161] For the DSO Mode Control field, reference can be made to the above definition of the DSO Mode Control field format.

[00162] For the DSO Mode Parameter Update field, reference can be made to the format of the DSO Mode Parameter Update field above. (3) DSO MODE RESPONSE FRAME

[00163] The DSO mode response frame is transmitted by the non-AP station or the AP to respond to the DSO mode request frame to accept or reject the requested DSO mode, or it is transmitted by the non-AP station or the AP to recommend a DSO mode. The information in the Action field of the DSO mode response frame is listed in Table 6. TABLE 6 Order Information 1 Category 2 Protected Action 3 Dialog Token 4 Status Code 4 DSO Mode Control field 5 DSO Parameter Update field (optional) Petition 870260021381, dated 09 / 03 / 2026, page 41 / 111 37 / 66

[00164] The Category field follows the relevant definitions of the Action field in IEEE 802.11.

[00165] The Protected Action field follows the relevant definitions of the Protected Action field in IEEE 802.11.

[00166] In a case where the DSO mode response frame is configured to respond to the DSO mode request frame, the Dialog Token field takes on a value from the Dialog Token field value in the DSO mode request frame.

[00167] In a case where the DSO mode response frame is transmitted as an unsolicited response, the Dialog Token field assumes a value of 0.

[00168] The Status Code field is listed in Table 7. TABLE 7 Status Code Name Meaning 0 (or other values) ACCEPT Accept the request 202 (or other values) DENIED_DYNAMIC_SUBCHANNLE_OPERATION Deny the request (because the DSO mode request is not accepted) 203 (or other values) PREFERRED_DYNAMIC_SUBCHANNLE_OPERATION Recommended DSO mode

[00169] In a case where the DSO mode response frame includes the DSO Mode Control field and / or the DSO Parameter Update field, the response frame is Petition 870260021381, dated 09 / 03 / 2026, page 42 / 111 38 / 66 configured to recommend the recommended DSO mode and / or the DSO parameter, and the status code is set to 203 or other values ​​(PREFERRED_DYNAMIC_SUBCHANNLE_OPERATION); otherwise, the DSO mode response frame will not include the DSO Mode Control field and the DSO parameter.

[00170] In a case where the first device is a non-AP device and the second device is an AP device, the first device receives the channel transition indication frame from the second device when the DSO mode between the first and second devices is enabled; and transitions to the target subchannel to perform frame exchange with the second device. In some modes, after exchanging frames with the second device on the target subchannel, the first device transitions to the conventional subchannel to perform frame exchange with the second device within the transition delay indicated by the DSO mode management frame.

[00171] The conventional subchannel is a subchannel used for frame exchange between the AP device and the non-AP device not based on DSO mode. For example, the conventional subchannel includes the primary channel of the AP device.

[00172] Similarly, in a case where the first device is a non-AP device and the second device is an AP device, the second device transmits the channel transition indication frame to the first device when DSO mode between the first and second devices is enabled; and transitions to the target subchannel to perform frame exchange with the first device. Petition 870260021381, dated 09 / 03 / 2026, page 43 / 111 39 / 66

[00173] In a case where the first device is an AP device and the second device is a non-AP device, the first device transmits the channel transition indication frame to the second device in a case where DSO mode between the first device and the second device is enabled; and transitions to the target subchannel to perform frame exchange with the second device.

[00174] Similarly, in a case where the first device is an AP device and the second device is a non-AP device, the second device receives the channel transition indication frame from the first device in a case where DSO mode between the first and second devices is enabled; and transitions to the target subchannel to perform frame exchange with the first device.

[00175] In a case where the first device is an AP device and the second device is a non-AP device, after exchanging frames with the first device on the target subchannel, the second device transitions to the conventional subchannel to perform frame exchange with the first device within the transition delay indicated by the DSO mode management frame.

[00176] In the above modes, upon successfully obtaining the TXOP on the target subchannel, the AP device transmits the channel transition indication frame to the non-AP device based on the information indicated by the DSO mode management frame. The non-AP device performs frame switching based on DSO mode according to the channel transition indication frame and the indicated information. Petition 870260021381, dated 09 / 03 / 2026, page 44 / 111 40 / 66 via the DSO mode management frame. In technical solutions, frame exchange between the first and second devices based on DSO mode is controlled by the DSO mode management frame, thus ensuring controllability of the timing and method of frame exchange between the first and second devices based on DSO mode.

[00177] In some modes, a channel transition indication frame tail includes a Fill subfield and a duration corresponding to the Fill subfield is not less than a MAC fill duration indicated by the DSO mode management frame.

[00178] The MAC fill duration of the Fill subfield allows the non-AP device to initiate the subchannel transition after receiving the channel transition indication frame, so that there is sufficient duration to transition to the target subchannel before the end of the next frame interval, and the subsequent frame switching process is not affected.

[00179] In some modes, the PPDU bandwidth for performing frame exchange in the target subchannel with the second device is no greater than a maximum PPDU bandwidth indicated by the DSO mode management frame.

[00180] In the above modes, the PPDU bandwidth for performing frame exchange between the first device and the second device based on DSO mode is managed through the DSO mode management frame, so that the controllability of frame exchange between the first device and the second device based on the mode Petition 870260021381, dated 09 / 03 / 2026, page 45 / 111 41 / 66 DSO is improved. DSO MODE TRANSITION MODALITIES AND PARAMETER UPDATE BASED ON THE NOTIFICATION FRAMEWORK

[00181] Figure 9 is a schematic diagram of a DSO mode transition and parameter update based on a notification frame according to some embodiments of this disclosure. As illustrated in Figure 9, non-AP STA1 and non-AP STA2 are 20 MHz only terminals and are associated with the AP. The AP's BSS operates in a 40 MHz bandwidth, including the 20 MHz primary channel and the 20 MHz secondary channel. Meanwhile, the AP supports DSO operation, and the conventional operating channel of non-AP STA2 is the 20 MHz primary channel. Non-AP STA2 supports DSO, and non-AP STA2 dynamically transitions, in a case where DSO mode is enabled, to the designated channel based on the DSO indication transmitted by the AP to perform frame switching.

[00182] The non-AP STA2 is initially in disabled DSO mode and operates only on the conventional channel (i.e., the primary 20 MHz channel) and may not perform DSO operation. Then, the non-AP STA2 initiates the DSO mode transition and DSO parameter update by transmitting the DSO mode notification frame to the AP. The notification frame indicates DSO enabled, the DSO subchannel (i.e., the secondary 20 MHz channel), the maximum transmission bandwidth (i.e., 20 MHz), the DSO fill delay (e.g., 128 μs), the DSO transition delay (128 μs), and the transition timeout (1 TU). After receiving the DSO mode notification frame from the AP, the AP transmits the DSO mode notification frame to the non-AP STA2 within the transition timeout duration (1 TU) indicated by the Time subfield. Petition 870260021381, dated 09 / 03 / 2026, page 46 / 111 42 / 66 Time elapsed since DSO key received. After receiving the DSO mode notification frame from the AP, the STA2 non-AP enters DSO mode.

[00183] After activating DSO mode (or entering DSO mode), the non-AP STA2 operates on the conventional channel (i.e., the 20 MHz primary channel) or the DSO subchannel (i.e., the 20 MHz secondary channel). After obtaining the TXOP on the 20 MHz primary channel and the 20 MHz secondary channel, the AP transmits an initial DSO control frame (e.g., a Multi-User Send Request (MU-RTS) frame) to the non-AP STA2 to instruct the non-AP STA2 to transition to the DSO subchannel (i.e., the 20 MHz secondary channel). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA2's transition from the conventional channel (i.e., the 20 MHz primary channel) to the DSO subchannel (i.e., the 20 MHz secondary channel). The initial DSO control frame is transmitted using a duplicated non-HT 40 MHz PPDU.After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA2 transitions to the 20 MHz secondary channel and transmits a response frame (e.g., a CTS (clear-tosend) frame) as a reply. Then, the AP performs frame exchange based on 40 MHz DL / UL OFDMA with the non-AP STA1 and non-AP STA2. The non-AP STA2 performs frame exchange with the AP in a RU located on the allocated 20 MHz secondary channel, and the non-AP STA1 performs frame exchange with the AP in a RU located on the allocated 20 MHz primary channel. In a case where the non-AP STA2 detects the end of frame exchange, the non-AP STA2 transitions to the conventional channel (i.e., the...). Petition 870260021381, dated 09 / 03 / 2026, page 47 / 111 43 / 66 primary channel of 20 MHz) after the DSO transition delay (128 ps).

[00184] Specifically, in a case where the AP triggers a plurality of non-AP stations (non-AP STAs) in DSO-enabled mode within the gained TXOP to perform DSO-based communication, the duration of the initial DSO control frame fill transmitted by the AP is greater than or equal to a maximum fill duration in a plurality of minimum MAC fill durations requested by the plurality of non-AP stations in DSO-enabled mode that are triggered. MODALITIES OF TRANSITION FOR PARAMETER UPDATES FROM DSO BASED ON THE NOTIFICATION FRAMEWORK

[00185] Figure 10 is a schematic diagram of a DSO parameter update based on a notification frame according to some embodiments of this disclosure. As illustrated in Figure 10, the non-AP STA is a terminal that supports a bandwidth of 40 MHz and is associated with the AP. The AP's BSS operates at a bandwidth of 80 MHz, including one 20 MHz primary channel and three 20 MHz secondary channels. Meanwhile, the AP supports DSO operation, the conventional operating channel of the non-AP STA is the 20 MHz primary channel, and the conventional operating bandwidth of the non-AP STA is 20 MHz (i.e., the bandwidth is reduced for power saving). The non-AP STA2 supports DSO and dynamically transitions, in the case where DSO mode is enabled, to the designated channel based on the DSO indication transmitted by the AP to perform frame exchange.

[00186] STA2 non-AP is in DSO enabled mode Petition 870260021381, dated 09 / 03 / 2026, p. 48 / 111 44 / 66 initially operates on the conventional channel (i.e., the 20 MHz primary channel) and the DSO subchannel (including the 20 MHz primary channel CH1 and the 20 MHz secondary channel CH0, with a maximum transmission bandwidth of 40 MHz).

[00187] After obtaining the TXOP on the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH0, the AP transmits an initial DSO control frame (e.g., an MU-RTS frame) to the non-AP STA to instruct the non-AP STA to transition to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA's transition from the conventional channel (i.e., the primary 20 MHz channel) to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA transitions to the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH0 and transmits a response frame (e.g., a CTS frame) as a reply.Next, the AP performs frame exchange with the non-AP STA on the DSO subchannel (i.e., primary channel CH1 of 20 MHz and secondary channel CH0 of 20 MHz). In a case where the non-AP STA detects the end of the frame exchange, the non-AP STA transitions to the conventional channel (i.e., the primary channel of 20 MHz) after the DSO transition delay.

[00188] After a duration, the non-AP STA initiates the DSO parameter update, i.e., indicating DSO is enabled, transmitting the DSO mode notification frame to the AP. The DSO subchannel is updated to the primary channel CH1 of 20 MHz and the secondary channel CH2 of 20 MHz and has a Petition 870260021381, dated 09 / 03 / 2026, page 49 / 111 45 / 66 maximum transmission bandwidth (i.e., 40 MHz). After receiving the DSO mode notification frame from the non-AP STA, the AP transmits the DSO mode notification frame to the non-AP STA within the transition timeout duration indicated by the received DSO Transition subfield. After receiving the DSO mode notification frame from the AP, the non-AP STA performs the DSO operation using the updated DSO parameter. The non-AP STA operates on the conventional channel (i.e., 20 MHz primary channel) or operates on the DSO subchannel (including the 20 MHz primary channel CH1 and the 20 MHz secondary channel CH2, with the maximum transmission bandwidth being 40 MHz).

[00189] After obtaining the TXOP on the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH2, the AP transmits an initial DSO control frame (e.g., an MU-RTS frame) to the non-AP STA to instruct the non-AP STA to transition to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA's transition from the conventional channel (i.e., the primary 20 MHz channel) to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH2). The initial DSO control frame is transmitted using a duplicated non-HT 40 MHz PPDU.After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA transitions to the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH2 and transmits a response frame (e.g., a CTS frame) as a reply. Then, the AP performs frame exchange with the non-AP STA on the DSO subchannel (i.e., primary 20 MHz channel CH1 and channel...). Petition 870260021381, dated 09 / 03 / 2026, page 50 / 111 46 / 66 secondary CH2 20 MHz). In a case where the non-AP STA detects the end of the frame exchange, the non-AP STA transitions to the conventional channel (i.e., the primary 20 MHz channel) after the DSO transition delay. DSO MODE NEGOTIATION MODALITIES AND PARAMETER UPDATES BASED ON THE REQUEST / RESPONSE FRAMEWORK

[00190] Figure 11 is a schematic diagram of DSO mode negotiation and parameter update based on a request / response frame according to some embodiments of this disclosure. As illustrated in Figure 11, non-AP STA1 and non-AP STA2 are 20 MHz only terminals and are associated with the AP. The AP's BSS operates in a 40 MHz bandwidth, including the 20 MHz primary channel and the 20 MHz secondary channel. Meanwhile, the AP supports DSO, and the conventional operating channel of non-AP STA2 is the 20 MHz primary channel. Non-AP STA2 supports DSO and dynamically transitions, in the case where DSO mode is enabled, to the designated channel based on the DSO indication transmitted by the AP to perform frame exchange.

[00191] The non-AP STA2 is initially in disabled DSO mode and operates only on the conventional channel (i.e., the primary 20 MHz channel) and may not perform DSO operation. The AP then transmits an unsolicited DSO mode response frame to the non-AP STA2 to recommend a recommended DSO mode and a DSO parameter, for example, indicating DSO enabled, the DSO subchannel (i.e., the secondary 20 MHz channel), and the maximum transmission bandwidth (i.e., 20 MHz). After receiving the unsolicited DSO mode response frame from the AP, the non-AP STA2 transmits a DSO mode request frame to initiate a request. Petition 870260021381, dated 09 / 03 / 2026, page 51 / 111 47 / 66 DSO mode transition and DSO parameter update. The request frame indicates the enabled DSO, the DSO subchannel (i.e., the 20 MHz secondary channel), the maximum transmission bandwidth (i.e., 20 MHz), the DSO fill delay (e.g., 128 μs), the DSO transition delay (128 μs), and the transition timeout (1 TU). After receiving the DSO mode request frame from the non-AP STA2, in a case where the AP accepts the DSO mode request, the AP transmits a DSO mode response frame with an accept status code to the non-AP STA2. After receiving the DSO mode response frame from the AP, the non-AP STA2 enables DSO mode.

[00192] After activating DSO mode (or entering DSO mode), the non-AP STA2 operates on the conventional channel (i.e., the 20 MHz primary channel) or the DSO subchannel (i.e., the 20 MHz secondary channel). After obtaining the TXOP on the 20 MHz primary channel and the 20 MHz secondary channel, the AP transmits an initial DSO control frame (e.g., a MU-RTS frame) to the non-AP STA2 to instruct the non-AP STA2 to transition to the DSO subchannel (i.e., the 20 MHz secondary channel). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA2's transition from the conventional channel (i.e., the 20 MHz primary channel) to the DSO subchannel (i.e., the 20 MHz secondary channel). The initial DSO control frame is transmitted using a duplicated non-HT 40 MHz PPDU.After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA2 transitions to the secondary 20 MHz channel and feeds back a response frame (e.g., a frame). Petition 870260021381, dated 09 / 03 / 2026, page 52 / 111 48 / 66 (CTS). Next, the AP performs frame exchange based on 40 MHz DL / UL OFDMA with non-AP STA1 and non-AP STA2. Non-AP STA2 performs frame exchange with the AP in a RU located on the allocated 20 MHz secondary channel, and non-AP STA1 performs frame exchange with the AP in a RU located on the allocated 20 MHz primary channel. In a case where non-AP STA2 detects the end of frame exchange, non-AP STA2 transitions to the conventional channel (i.e., the 20 MHz primary channel) after the DSO transition delay (128 μs). DSO MODE NEGOTIATION MODALITIES AND PARAMETER UPDATES BASED ON THE REQUEST / RESPONSE FRAMEWORK

[00193] Figure 12 is a schematic diagram of DSO mode negotiation and parameter update based on a request / response frame according to some embodiments of this disclosure. As illustrated in Figure 12, the non-AP STA is a terminal that supports a bandwidth of 40 MHz and is associated with the AP. The AP's BSS operates at a bandwidth of 80 MHz, including one 20 MHz primary channel and three 20 MHz secondary channels. Meanwhile, the AP supports DSO operation, the conventional operating channel of the non-AP STA is the 20 MHz primary channel, and the conventional operating bandwidth of the non-AP STA is 20 MHz (i.e., the bandwidth is reduced for power saving). The non-AP STA2 supports DSO and dynamically transitions, in the case where DSO mode is enabled, to the designated channel based on the DSO indication transmitted by the AP to perform frame exchange.

[00194] The non-AP STA2 is initially in DSO-enabled mode and operates on the conventional channel (i.e., the primary 20 MHz channel) and the DSO subchannel (including the channel Petition 870260021381, dated 09 / 03 / 2026, p. 53 / 111 49 / 66 primary CH1 of 20 MHz and secondary channel CH0 of 20 MHz, with a maximum transmission bandwidth of 40 MHz).

[00195] After obtaining the TXOP on the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH0, the AP transmits an initial DSO control frame (e.g., an MU-RTS frame) to the non-AP STA to instruct the non-AP STA to transition to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA's transition from the conventional channel (i.e., the primary 20 MHz channel) to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). The initial DSO control frame is transmitted using a duplicated non-HT 40 MHz PPDU.After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA transitions to the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH0 and transmits a response frame (e.g., a CTS frame) as a reply. Then, the AP performs frame exchange with the non-AP STA on the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). In a case where the non-AP STA detects the end of the frame exchange, the non-AP STA transitions to the conventional channel (i.e., the primary 20 MHz channel) after the DSO transition delay.

[00196] After a duration, the AP transmits a null QoS frame or other frames carrying the DSO Mode Control subfield and / or the DSO Parameter Update subfield in an HT Control field. The HE variant for non-AP STA is to recommend the recommended DSO mode and / or the DSO parameter. Petition 870260021381, dated 09 / 03 / 2026, page 54 / 111 50 / 66 target station, for example, indicates enabling DSO, the DSO subchannel (primary channel CH1 and secondary channel CH2) or the maximum transmission bandwidth (i.e., 40 MHz). After receiving the recommended DSO mode and the recommended DSO operating parameter, the non-AP STA initiates the DSO parameter update, i.e., indicating DSO enabled, by transmitting the DSO mode request frame to the AP. The DSO subchannel is updated to the primary channel CH1 of 20 MHz and the secondary channel CH2 of 20 MHz and has maximum transmission bandwidth (i.e., 40 MHz). After receiving the DSO mode notification frame from the non-AP STA, the AP transmits the DSO mode response frame as a reply to the non-AP STA. After receiving the DSO mode notification frame from the AP, the non-AP STA executes the DSO operation using the updated DSO parameter.A non-AP STA operates on the conventional channel (i.e., the 20 MHz primary channel) or operates on the DSO subchannel (including the 20 MHz primary channel CH1 and the 20 MHz secondary channel CH2, with a maximum transmission bandwidth of 40 MHz).

[00197] After obtaining the TXOP on the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH2, the AP transmits an initial DSO control frame (e.g., an MU-RTS frame) to the non-AP STA to instruct the non-AP STA to transition to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH0). Meanwhile, the initial DSO control frame carries sufficient padding delay to ensure the necessary delay for the non-AP STA's transition from the conventional channel (i.e., the primary 20 MHz channel) to the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH2). The Petition 870260021381, dated 09 / 03 / 2026, page 55 / 111 The initial DSO control frame (51 / 66) is transmitted using a duplicated non-HT 40 MHz PPDU. After receiving the DSO transition indication in the initial DSO control frame, the non-AP STA transitions to the primary 20 MHz channel CH1 and the secondary 20 MHz channel CH2 and transmits a response frame (e.g., a CTS frame) as a reply. The AP then performs frame exchange with the non-AP STA on the DSO subchannel (i.e., primary 20 MHz channel CH1 and secondary 20 MHz channel CH2). In a case where the non-AP STA detects the end of the frame exchange, the non-AP STA transitions to the conventional channel (i.e., the primary 20 MHz channel) after the DSO transition delay.

[00198] In the technical solutions according to the modalities of this disclosure, the dynamic subchannel (or subband) operating mode within a BSS is managed, or the dynamic subchannel (or subband) operating mode in multi-AP or multi-link operating scenarios is managed.

[00199] Figure 13 is a block diagram of a channel operation apparatus according to some embodiments of the present disclosure. The apparatus has the function of the process performed by the first device in the channel operation method. As illustrated in Figure 13, the apparatus includes: a receiver module 1301, configured to receive a DSO mode management frame from a second device, wherein the DSO mode management frame is configured to indicate whether a DSO mode between the first device and the second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device can transition to a target subchannel. Petition 870260021381, dated 09 / 03 / 2026, page 56 / 111 52 / 66 via a DSO mode to perform frame switching, where the target subchannel is indicated by the DSO mode management frame.

[00200] In some embodiments, disabled mode is a mode in which the target device is not permitted to perform frame exchange via DSO mode; or disabled mode is a mode in which the target device is not permitted to transition to the target subchannel via DSO mode to perform frame exchange.

[00201] In some embodiments, the target device is at least one of the first device or the second device.

[00202] In some embodiments, the device additionally includes a configuration module, configured to define, based on the DSO mode management frame, the DSO mode and / or an operational parameter to perform the DSO operation between the first device and the second device.

[00203] In some embodiments, the DSO mode management frame is a DSO mode notification frame, and the device additionally includes: a first transmission module, configured to transmit the DSO mode notification frame as a response to the second device within a timeout after receiving the DSO mode notification frame.

[00204] In some embodiments, the DSO mode management frame is a DSO mode request frame, and the configuration module is configured to define, based on the DSO mode request frame, the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device in response to Petition 870260021381, dated 09 / 03 / 2026, page 57 / 111 53 / 66 determination to accept the DSO mode and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

[00205] In some embodiments, the device additionally includes a second transmission module, configured to transmit a first DSO mode response frame as a response to the second device; wherein the first DSO mode response frame indicates whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

[00206] In some modes, the first response frame of the DSO mode includes a first status code; where the first status code indicates whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

[00207] In some embodiments, the device additionally includes a third transmission module, configured to transmit a second unsolicited DSO mode response frame to the second device, wherein the second DSO mode response frame indicates a recommended DSO mode and / or a recommended operating parameter for performing the DSO operation.

[00208] In some embodiments, the second response frame of the DSO mode includes a second status code; wherein the second status code is set to indicate that the second response frame of the DSO mode is set to recommend the DSO mode and / or the operational parameter to perform the DSO operation.

[00209] In some modalities, the framework of Petition 870260021381, dated 09 / 03 / 2026, page 58 / 111 54 / 66 DSO mode management includes at least one of a DSO Mode Control field and a DSO Parameter Update field; wherein the DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update an operational parameter to perform the DSO operation between the first device and the second device.

[00210] In some embodiments, the second DSO mode response frame includes at least one of a DSO Mode Control field or a DSO Parameter Update field; wherein the DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update the operational parameter to perform the DSO operation between the first device and the second device.

[00211] In some embodiments, the DSO Mode Control field includes at least one of a DSO Mode subfield, a DSO Subchannel Bitmap subfield, a Maximum Transmit Bandwidth subfield, or a DSO Parameter Update Control field; wherein the DSO Mode subfield is configured to indicate a DSO mode to be transferred, the DSO Subchannel Bitmap subfield is configured to indicate the target subchannel by means of a bitmap, the Maximum Transmit Bandwidth subfield is configured to indicate a maximum PPDU bandwidth allowed for reception or transmission on the target subchannel, and the DSO Parameter Update Control field is configured to indicate whether the DSO Parameter Update field is present in a field Petition 870260021381, dated 09 / 03 / 2026, page 59 / 111 55 / 66 current frame.

[00212] In some modes, in a case where a parameter value in the DSO Mode subfield is a first parameter value, the DSO Mode subfield indicates that the DSO mode to be transitioned to is the enabled mode; or in a case where a parameter value in the DSO Mode subfield is a second parameter value, the DSO Mode subfield indicates that the DSO mode to which to transition is the disabled mode.

[00213] In some embodiments, the DSO Parameter Update field includes at least one DSO Mode Fill Delay subfield or one DSO Transition Delay subfield; wherein the DSO Mode Fill Delay subfield is configured to indicate a MAC fill duration of a channel transition indication frame, wherein the channel transition indication frame is configured to trigger the target device to transition to the target subchannel via DSO mode to perform frame switching; and the DSO Transition Delay subfield is configured to indicate a transition delay for transitioning from the target subchannel to a conventional subchannel.

[00214] In some embodiments, in a case where the DSO mode management frame is a DSO mode notification frame, the DSO Parameter Update field includes a Switch Timeout subfield, wherein the Switch Timeout subfield is configured to indicate a transmission timeout duration for the DSO mode notification frame as a response from the first device to the second device after receiving the DSO mode notification frame.

[00215] In some modalities, in a case where Petition 870260021381, dated 09 / 03 / 2026, pp. 60 / 111 56 / 66 the first device is a non-AP device and the second device is an AP device, the receiver module is configured to receive a channel transition indication frame from the second device in a case where the DSO mode between the first device and the second device is enabled; and the device additionally includes a first transition module, configured to transition to the target subchannel to perform frame exchange with the second device.

[00216] In some embodiments, the first transition module is configured to transition to a conventional subchannel to perform frame exchange with the second device within a transition delay indicated by the DSO mode management frame in response to the end of frame exchange on the target subchannel with the second device.

[00217] In some embodiments, in a case where the first device is an access point (AP) device and the second device is a non-AP device, the device additionally includes: a fourth transmission module, configured to transmit a channel transition indication frame to the second device in a case where the DSO mode between the first device and the second device is enabled; and the device additionally includes a second transition module, configured to perform frame exchange on the target subchannel with the second device.

[00218] In some embodiments, a frame tail of the channel transition indication frame includes a Fill field, wherein a duration corresponding to the Fill field is not less than a minimum duration of Petition 870260021381, dated 09 / 03 / 2026, page 61 / 111 57 / 66 MAC filling indicated by the DSO mode management panel.

[00219] In some modes, a PPDU bandwidth for performing frame exchange in the target subchannel with the second device is no greater than a maximum PPDU bandwidth indicated by the DSO mode management frame.

[00220] Figure 14 is a block diagram of a channel operation apparatus according to some embodiments of the present disclosure. The apparatus has the function of the process performed by the second device in the channel operation method.

[00221] As illustrated in Figure 14, the apparatus includes: a transmitter module 1401, configured to transmit a dynamic subchannel operating mode (DSO) management frame to a first device; wherein the DSO mode management frame indicates whether a DSO mode between the first device and the second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device is permitted to switch to a target subchannel via a DSO mode to perform frame switching, wherein the target subchannel is indicated by the DSO mode management frame.

[00222] In some embodiments, disabled mode is a mode in which the target device is not permitted to perform frame exchange via DSO mode; disabled mode is a mode in which the target device is not permitted to transition to the target subchannel via DSO mode to perform frame exchange.

[00223] In some embodiments, the target device is at least one of the first or second devices. Petition 870260021381, dated 09 / 03 / 2026, page 62 / 111 58 / 66 device.

[00224] In some embodiments, the device additionally includes a configuration module, configured to define, based on the DSO mode management frame, the DSO mode and / or an operational parameter to perform the DSO operation between the first device and the second device.

[00225] In some embodiments, the DSO mode management frame is a DSO mode notification frame, and the configuration module is configured to: define, based on the DSO mode management frame, the DSO mode and / or operational parameter to perform the DSO operation between the first device and the second device in response to receiving the DSO mode notification frame fed back by the first device within a timeout when transmitting the DSO mode notification frame; or define, based on the DSO mode management frame, the DSO mode and / or operational parameter to perform the DSO operation between the first device and the second device after the arrival of a timeout duration in response to not receiving the DSO mode notification frame transmitted as a response by the first device within the timeout duration when transmitting the DSO mode notification frame.

[00226] In some embodiments, the DSO mode management frame is a DSO mode request frame and the configuration module is configured to: receive a first DSO mode response frame fed back by the first device, where the first DSO mode response frame indicates whether the DSO mode should be accepted and / or the operational parameter to execute the indicated DSO operation. Petition 870260021381, dated 09 / 03 / 2026, page 63 / 111 59 / 66 by the DSO mode request frame; and define, based on the DSO mode request frame, the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device in a case where the first DSO mode response frame indicates acceptance of the DSO mode and / or the operational parameter to perform the DSO operation indicated by the DSO mode request frame.

[00227] In some modes, the first response frame of the DSO mode includes a first status code, where the first status code indicates whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

[00228] In some embodiments, the device additionally includes a receiver module, configured to receive a second unsolicited DSO mode response frame from the first device, wherein the second DSO mode response frame indicates a recommended DSO mode and / or a recommended operating parameter for performing the DSO operation.

[00229] In some embodiments, the transmission module is configured to transmit the DSO mode management frame to the first device based on the second DSO mode response frame.

[00230] In some embodiments, the second response frame of the DSO mode includes a second status code, where the second status code indicates that the second response frame of the DSO mode is configured to recommend the DSO mode and / or the operational parameter to perform the DSO operation.

[00231] In some modalities, the table of Petition 870260021381, dated 09 / 03 / 2026, page 64 / 111 60 / 66 DSO mode management includes at least one of a DSO Mode Control field and a DSO Parameter Update field; wherein the DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update an operational parameter to perform the DSO operation between the first device and the second device.

[00232] In some embodiments, the second DSO mode response frame includes at least one DSO Mode Control field and one DSO Parameter Update field; wherein the DSO Mode Control field is configured to control the DSO mode between the first device and the second device, and the DSO Parameter Update field is configured to update the operational parameter to perform the DSO operation between the first device and the second device.

[00233] In some embodiments, the DSO Mode Control field includes at least one of a DSO Mode subfield, a DSO Subchannel Bitmap subfield, a Maximum Transmit Bandwidth subfield, or a DSO Parameter Update Control field; wherein the DSO Mode subfield is set to indicate a DSO mode to be transferred, the DSO Subchannel Bitmap subfield is set to indicate the target subchannel by means of a bitmap, the Maximum Transmit Bandwidth subfield is set to indicate a maximum PPDU bandwidth allowed for reception or transmission on the target subchannel, and the DSO Parameter Update Control field is set to indicate whether the DSO Parameter Update field is present in a current frame field. Petition 870260021381, dated 09 / 03 / 2026, page 65 / 111 61 / 66

[00234] In some embodiments, in a case where a parameter value in the DSO Mode subfield is a first parameter value, the DSO Mode subfield indicates that the DSO mode to be transitioned to is the enabled mode; or in a case where a parameter value in the DSO Mode subfield is a second parameter value, the DSO Mode subfield indicates that the DSO mode to which to transition is the disabled mode.

[00235] In some embodiments, the DSO Parameter Update field includes at least one DSO Mode Fill Delay subfield or one DSO Transition Delay subfield; wherein the DSO Mode Fill Delay subfield is configured to indicate a minimum MAC fill duration of a channel transition indication frame, wherein the channel transition indication frame is configured to trigger the target device to transition to the target subchannel via DSO mode to perform frame switching; and the DSO Transition Delay subfield is configured to indicate a transition delay for transitioning from the target subchannel to a conventional subchannel.

[00236] In some embodiments, in a case where the DSO mode management frame is a DSO mode notification frame, the DSO Parameter Update field includes a Switch Timeout subfield, wherein the Switch Timeout subfield is configured to indicate a transmission timeout duration for the DSO mode notification frame as a response from the first device to the second device after receiving the DSO mode notification frame.

[00237] In some embodiments, in a case where the first device is a non-AP device and the second Petition 870260021381, dated 09 / 03 / 2026, p. 66 / 111 The 62 / 66 device is an AP device; the transmitter module is configured to transmit a channel transition indication frame to the first device in a case where the DSO mode between the first device and the second device is enabled; and the device additionally includes a first transition module, configured to perform frame exchange on the target subchannel with the first device.

[00238] In some embodiments, in a case where the first device is an AP device and the second device is a non-AP device, the device additionally includes: a second receiver module, configured to receive a channel transition indication frame from the first device in a case where the DSO mode between the first device and the second device is enabled; and the device additionally includes a second transition module, configured to perform the transition to carry out the frame exchange on the target subchannel with the second device.

[00239] In some embodiments, the second transition module is configured to transition to a conventional subchannel to perform frame exchange with the first device within a transition delay indicated by the DSO mode management frame in response to the end of frame exchange on the target subchannel with the first device.

[00240] In some embodiments, a frame tail of the channel transition indication frame includes a Fill field, wherein a duration corresponding to the Fill field is not less than a minimum MAC fill duration indicated by the management frame of Petition 870260021381, dated 09 / 03 / 2026, page 67 / 111 63 / 66 DSO mode.

[00241] In some modes, a PPDU bandwidth for data transmission on the target subchannel with the first device is no greater than a maximum PPDU bandwidth indicated by the DSO mode management frame.

[00242] It should be noted that, in the case where the device according to the above modalities implements the functions of the same, the division of functional modules is merely illustrative. In practice, the above functions can be assigned and completed by different functional modules according to actual needs, i.e., the device can be divided into different functional modules to implement all or part of the above functions.

[00243] With regard to the apparatus in the above embodiments, the specific manner in which each module performs the operations has been described in detail in the embodiments related to the method and is not described in detail in this document. For details not specified in the apparatus embodiments, reference may be made to the embodiments of the method above.

[00244] Figure 15 is a schematic structural diagram of a communication device1500 according to some embodiments of the present disclosure. The communication device 1500 includes: a processor 1501, a receiver 1502, a transmitter 1503, a memory 1504 and a bus 1505.

[00245] The 1501 processor includes one or more processing cores and performs various functional applications and information processing by running programs and software modules.

[00246] Receiver 1502 and transmitter 1503 are Petition 870260021381, dated 09 / 03 / 2026, p. 68 / 111 64 / 66 devices are used as a communication set. The communication set is a communication chip and is also known as a transceiver.

[00247] Memory 1504 is connected to processor 1501 via bus 1505.

[00248] Memory 1504 is configured to store one or more computer programs and processor 1501 is configured to load and execute one or more computer programs to perform various processes in the above method modes.

[00249] Furthermore, 1504 memory is practiced by any type of volatile or non-volatile storage device or combinations thereof. Volatile or non-volatile storage device includes, without limitation, a disk or optical disk, an electrically erasable programmable read-only memory, an erasable programmable read-only memory, a persistent random access memory, a read-only memory, a magnetic memory, a flash memory or a programmable read-only memory.

[00250] In some embodiments, the communication device includes a processor, a memory and a transceiver (the transceiver includes a receiver and a transmitter, the receiver is configured to receive information and the transmitter is configured to transmit information).

[00251] In some embodiments, the processor and transceiver are configured to execute all or part of the processes executed by the first device or the second device in the embodiments illustrated in Figures 4, 5, or 6, which is not further described in this document. Petition 870260021381, dated 09 / 03 / 2026, page 69 / 111 65 / 66

[00252] Some embodiments of the present disclosure further provide a computer-readable storage medium that stores one or more computer programs, wherein one or more computer programs, when loaded and executed by a processor, cause the processor to execute all or part of the processes executed by the first device or the second device in the embodiments illustrated in Figures 4, 5 or 6.

[00253] Some embodiments of the present disclosure further provide a computer program product. The computer program product includes one or more computer instructions, wherein one or more computer instructions are stored in a computer-readable storage medium and a processor in a communication device is configured to read, load, and execute one or more computer instructions to cause the communication device to perform all or part of the processes performed by the first device or the second device in the embodiments illustrated in Figures 4, 5, or 6.

[00254] Some embodiments of the present disclosure additionally provide a chip. The chip includes programmable logic circuits and / or program instructions and, when implemented in a communication device, causes the communication device to execute all or part of the processes executed by the first device or the second device in the embodiments illustrated in Figures 4, 5, or 6.

[00255] Some versions of this disclosure also provide a computer program. The program Petition 870260021381, dated 09 / 03 / 2026, pp. 70 / 111 A 66 / 66 computer, when loaded and executed by a processor on a communication device, causes the communication device to execute all or part of the processes executed by the first device or the second device in the modes illustrated in Figures 4, 5, or 6.

[00256] Persons skilled in the art should understand that, in one or more of the above embodiments, the functions described in the embodiments of this disclosure may be implemented in hardware, software, firmware, or any combination thereof. The functions, when implemented in software, may be stored on a computer-readable medium or transmitted as one or more instructions or codes on a computer-readable medium. The computer-readable medium includes a computer storage medium and a communication medium, wherein the communication medium includes any means that facilitates the transfer of a computer program from one place to another. The storage medium is any available medium that is accessible by a general-purpose or specialized computer.

[00257] The above are merely illustrative examples of the present disclosure and are not intended to limit the present disclosure. Any modifications, equivalent substitutions, enhancements and the like made within the spirit and principles of the present disclosure shall be covered by the scope of protection of the present disclosure. Petition 870260021381, dated 09 / 03 / 2026, pp. 71 / 111

Claims

1 / 7 CLAIMS 1. METHOD FOR CHANNEL OPERATION, PERFORMED BY A FIRST DEVICE, the method being characterized by comprising: receiving (401) a dynamic subchannel / subband (DSO) mode operation management frame from a second device; wherein the DSO mode management frame is configured to indicate that a DSO mode between the first device and the second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device is allowed to transition to a target subchannel / subband via a DSO mode to perform frame exchange, wherein the target subchannel / subband is indicated by the DSO mode management frame.

2. METHOD, according to claim 1, characterized in that the disabled mode is a mode in which the target device is not allowed to perform frame switching via DSO mode; or the disabled mode is a mode in which the target device is not allowed to transition to the target subchannel / sub-band via DSO mode to perform frame switching.

3. METHOD, according to claim 1 or 2, characterized in that the target device is at least one of the first device or the second device.

4. METHOD, according to any one of claims 1 to 3, characterized by further comprising: Petition 870260021381, dated 09 / 03 / 2026, page 72 / 111 2 / 7 configuring (S602), based on the DSO mode management framework, the DSO mode and / or an operational parameter to perform a DSO operation between the first device and the second device.

5. METHOD, according to any one of claims 1 to 4, characterized in that the DSO mode management frame is a DSO mode notification frame, and wherein the method further comprises: transmitting the DSO mode notification frame as a response to the second device within a timeout after receiving the DSO mode notification frame.

6. METHOD, according to claim 4, characterized in that the DSO mode management frame is a DSO mode request frame, and the configuration, based on the DSO mode management frame, of the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device comprises: configuring, based on the DSO mode request frame, the DSO mode and / or the operational parameter to perform the DSO operation between the first device and the second device in response to the determination of the acceptance of the DSO mode and / or the operational parameter to perform the DSO operation indicated by the DSO mode request frame.

7. METHOD, according to claim 6, characterized by further comprising: transmitting a first DSO mode response frame as a response to the second device, wherein the first DSO mode response frame is configured to indicate whether the DSO mode should be accepted and / or the operational parameter to execute the DSO operation indicated by the DSO mode request frame.

8. METHOD, according to claim 6 or 7, characterized by further comprising: transmitting a second unsolicited DSO mode response frame to the second device, wherein the second DSO mode response frame is configured to indicate a recommended DSO mode and / or a recommended operational parameter to perform the DSO operation, wherein the second DSO mode response frame comprises a second status code, wherein the second status code is configured to indicate that the second DSO mode response frame is configured to recommend the DSO mode and / or the operational parameter to perform the DSO operation; and the second DSO mode response frame further comprises at least one DSO Mode Control field or a DSO Parameter Update field; wherein the DSO Mode Control field or a subfield of the DSO Mode Control field is configured to control the DSO mode between the first device and the second device;and the DSO Parameter Update field is configured to update the operational parameter to perform the DSO operation between the first device and the second device; where the DSO Mode Control field is configured to enable / disable the DSO mode between the first device and the second device.

9. METHOD, according to any one of claims 1 to 7, characterized in that the DSO mode management frame comprises at least one DSO Mode Control field or one DSO Parameter Update field; Petition 870260021381, dated 09 / 03 / 2026, page 74 / 111 4 / 7 wherein the DSO Mode Control field is configured to control the DSO mode between the first device and the second device; and the DSO Parameter Update field is configured to update an operational parameter to perform DSO control between the first device and the second device; wherein the DSO Mode Control field or a subfield of the DSO Mode Control field is configured to enable / disable the DSO mode between the first device and the second device.

10. METHOD, according to any one of claims 1 to 9, characterized in that the DSO Mode Control field comprises at least one of a DSO Mode subfield, a DSO Subchannel Bit Map subfield, a Maximum Transmission Bandwidth subfield, or a DSO Parameter Update Control field; wherein the DSO Mode subfield is configured to indicate a DSO mode to which the transition will be made; the DSO Subchannel Bit Map subfield is configured to indicate the target subchannel / subband by means of a bit map; the Maximum Transmission Bandwidth subfield is configured to indicate a maximum allowed bandwidth of the physical layer protocol data unit (PPDU) for reception or transmission in the target subchannel / subband; and the DSO Parameter Update Control field is configured to indicate whether the Petition Update field 870260021381, dated 09 / 03 / 2026, page 1, is correct.75 / 111 5 / 7 The DSO parameter is present in a current frame; and in a case where the parameter value in the DSO Mode subfield is the first parameter value, the DSO Mode subfield indicates that DSO mode has been enabled; or in a case where the parameter value in the DSO Mode subfield is the second parameter value, the DSO Mode subfield indicates that DSO mode has been disabled.

11. METHOD, according to claim 9 or 10, characterized in that the DSO Parameter Update field comprises at least one of a subfield of a DSO Mode Fill Delay subfield or a DSO Transition Delay subfield; wherein the DSO Mode Fill Delay subfield is configured to indicate a minimum medium access control (MAC) fill duration for a Channel Transition Indication Frame Fill field, wherein the Channel Transition Indication Frame is configured to trigger the target device to transition to the target subchannel / subband via the DSO scheme to perform frame switching; and the DSO Transition Delay subfield is configured to indicate a transition delay for transitioning from the target subchannel / subband to a primary subchannel.

12. METHOD, according to any one of claims 9 to 11, characterized in that, in a case where the DSO mode management frame is a DSO mode notification frame, the DSO Parameter Update field comprises a Switch Timeout subfield; wherein the Switch Timeout subfield is configured to indicate a timeout duration of Petition 870260021381, dated 09 / 03 / 2026, page 76 / 111 6 / 7 transmission of the DSO mode notification frame as a response from the first device to the second device after receiving the DSO mode notification frame.

13. METHOD, according to any one of claims 1 to 12, characterized in that, in a case where the first device is a non-access point (non-AP) device and the second device is an AP device, the method further comprises: receiving a channel transition indication frame from the second device in a case where the DSO mode between the first device and the second device is enabled; transitioning to the target subchannel / subband to perform frame exchange with the second device; and switching to a primary subchannel / subband within a transition delay indicated by the DSO mode management frame in response to the end of frame exchange in the target subchannel / subband with the second device;and in a case where the first device is an access point (AP) and the second device is a non-access point, the method further comprises: transmitting a channel exchange indication frame to the second device, if the DSO mode between the first device and the second device is the activated mode; and performing frame exchange on the target subchannel / sub-band with the second device; wherein the tail of the channel indication frame comprises a padding field, wherein the duration corresponding to the padding field is not less than the minimum padding duration of the access control to the medium (MAC) indicated by the DSO mode management frame.

14. CHANNEL OPERATION APPARATUS characterized by comprising: a receiver module (1301), configured to perform the channel operation method, as defined in any one of claims 1 to 13.

15. CHANNEL OPERATION APPARATUS characterized by comprising: a transmission module (1401), configured to transmit a dynamic subchannel / subband (DSO) mode operation management frame to a first device; wherein the DSO mode management frame indicates whether a DSO mode between the first device and a second device is an enabled mode or a disabled mode, wherein the enabled mode is a mode in which a target device is permitted to transition to a target subchannel / subband via a DSO mode to perform frame exchange, wherein the target subchannel / subband is indicated by the DSO mode management frame. Petition 870260021381, dated 09 / 03 / 2026, pp. 78 / 111

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